Your UFC Research Platform
Manage your Fight Lab database, import data, and maintain your scouting platform.
Manage interim UFC championship status separately from the official UFC rankings.
The UFC rankings importer controls official champions. Interim championship status is maintained separately by Fight Lab.
No interim champions currently assigned.
Only fighters currently listed in the UFC rankings can be assigned as an interim champion.
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| Name | Record | Division |
|---|---|---|
| Aalon Cruz | 11-5 | Featherweight |
| Aaron Brink | 1-7 | Light Heavyweight |
| Aaron Phillips | 6-10 | Middleweight |
| Aaron Pico | 15-5 | Featherweight |
| Aaron Riley | 30-14 | Lightweight |
| Aaron Rosa | 4-6 | Light Heavyweight |
| Aaron Simpson | 12-5 | Welterweight |
| Aaron Wilkinson | 11-7 | Welterweight |
| Abdul Hussein | 16-2-0 | Bantamweight |
| Abdul-Kareem Al-Selwady | 16-4 | Lightweight |
| Abdul-Kerim Edilov | 17-4 | Light Heavyweight |
| Abdul Rakhman Yakhyaev | 12-0 | Light Heavyweight |
| Abdul Razak Alhassan | 12-7 | Middleweight |
| Abe Alsaghir | 9-0 | — |
| Abel Trujillo | 15-8 | Lightweight |
| Abner Lloveras | 21-12 | Lightweight |
| Abu Azaitar | 14-4 | Middleweight |
| Abubakar Nurmagomedov | 17-4 | Welterweight |
| Abubakar Vagaev | 26-4 | Middleweight |
| Abus Magomedov | 30-7-1 | Middleweight |
| Adama Diop | 7-1 | Heavyweight |
| Adam Cella | 6-6 | Welterweight |
| Adam Darby | 8-1 | Welterweight |
| Adam Fugitt | 10-6 | Welterweight |
| Adam Livingston | 8-1 | Lightweight |
| Adam Milstead | 8-3 | Light Heavyweight |
| Adam Wieczorek | 10-2 | Heavyweight |
| Adam Yandiev | 9-1 | Middleweight |
| Adlan Amagov | 13-2 | Welterweight |
| Adrian Luna Martinetti | 17-2 | Bantamweight |
| Adriano Martins | 29-11 | Lightweight |
| Adriano Santos | 0-1 | — |
| Adrian Serrano | 2-3 | Welterweight |
| Adrian Yanez | 18-6-1 | Bantamweight |
| Aiemann Zahabi | 14-3 | Bantamweight |
| Aieza Bertolso | 8-0 | Women's Strawweight |
| Ailin Perez | 14-2 | Women's Bantamweight |
| Aisling Daly | 16-6 | Women's Strawweight |
| AJ Cunningham | 11-5 | Bantamweight |
| AJ Dobson | 7-3 | Middleweight |
| AJ Fletcher | 10-4 | Welterweight |
| Akbar Abdullaev | 14-0-0 | Lightweight |
| Akbarh Arreola | 23-12 | Lightweight |
| Akihiro Gono | 11-11 | — |
| Akira Corassani | 12-7 | Featherweight |
| Alan Baudot | 8-4 | Light Heavyweight |
| Alan Belcher | 18-8 | Middleweight |
| Alan Jouban | 17-7 | Welterweight |
| Alan Omer | 24-5 | Featherweight |
| Alan Patrick | 15-4 | Lightweight |
| Alatengheili | 18-10-2 | Bantamweight |
| Alberta Cerra Leon | 0-1 | Open Weight |
| Albert Cheng | 2-3 | Welterweight |
| Albert Duraev | 16-5 | Middleweight |
| Albert Morales | 19-11-1 | Bantamweight |
| Alberto Crane | 2-3 | — |
| Alberto Mina | 13-1 | Welterweight |
| Alberto Montes | 12-2 | Featherweight |
| Alberto Uda | 9-3 | Middleweight |
| Albert Tumenov | 22-6 | Welterweight |
| Alden Coria | 14-4-1 | Flyweight |
| Alejandro Perez | 23-9-1 | Bantamweight |
| Aleksa Camur | 6-3 | Light Heavyweight |
| Aleksandar Rakic | 15-6 | Heavyweight |
| Aleksandra Albu | 2-2 | Women's Strawweight |
| Aleksandre Topuria | 7-1-0 | Bantamweight |
| Aleksei Kunchenko | 20-4 | Welterweight |
| Aleksei Oleinik | 61-17 | Heavyweight |
| Alen Amedovski | 8-4 | Middleweight |
| Alessandro Costa | 17-5-0 | Flyweight |
| Alessio Di Chirico | 13-7 | Middleweight |
| Alessio Sakara | 21-14 | Middleweight |
| Alexa Grasso | 19-5-2 | Women's Flyweight |
| Alexander Chavez | 0-1-9 | Flyweight |
| Alexander Gustafsson | 18-8 | Light Heavyweight |
| Alexander Hernandez | 20-11 | Lightweight |
| Alexander Munoz | 7-2 | Lightweight |
| Alexander Poppeck | 21-6-1 | Heavyweight |
| Alexander Volkanovski | 30-4 | Featherweight |
| Alexander Volkov | 43-11 | Heavyweight |
| Alexander Yakovlev | 22-12 | Lightweight |
| Alex Andrade | 0-3 | Light Heavyweight |
| Alexandre Barros | 0-7 | — |
| Alexandre Dantas | 0-2 | Heavyweight |
| Alexandre Ferreira | 18-6 | Light Heavyweight |
| Alexandre Pantoja | 32-7 | Flyweight |
| Alexandr Romanov | 22-4-1 | Heavyweight |
| Alex Apodaca | 4-1 | — |
| Alex Caceres | 21-15 | Featherweight |
| Alex Chambers | 5-5 | Women's Strawweight |
| Alex Da Silva | 1-4 | Flyweight |
| Alex Garcia | 5-5 | Welterweight |
| Alex Gorgees | 6-1 | Lightweight |
| Alex Hunter | 2-0 | Heavyweight |
| Alexia Thainara | 15-1 | Women's Strawweight |
| Alexis Davis | 21-11 | Women's Flyweight |
| Alexis Dufresne | 6-3 | Women's Bantamweight |
| Alexis Miranda | 9-3 | — |
| Alex Karalexis | 4-5 | Lightweight |
| Alex Morono | 24-13 | Welterweight |
| Alex Nicholson | 17-11 | Middleweight |
| Alex Oliveira | 25-16 | Welterweight |
| Alex Pereira | 13-4-0 | Heavyweight |
| Alex Perez | 26-11 | Flyweight |
| Alex Reyes | 13-6 | Lightweight |
| Alex Ricci | 0-2 | Lightweight |
| Alex Schoenauer | 0-3 | Light Heavyweight |
| Alex Soto | 1-3 | Bantamweight |
| Alex Stiebling | 3-8 | Middleweight |
| Alex Torres | 0-1 | Featherweight |
| Alex White | 13-6 | Featherweight |
| Alfonso Alcarez | 0-0-1 | Lightweight |
| Ali AlQaisi | 15-8 | Bantamweight |
| Al Iaquinta | 14-7 | Lightweight |
| Aliaskhab Khizriev | 14-0 | Middleweight |
| Ali Bagautinov | 17-7 | Flyweight |
| Alibi Idiris | 11-1 | Flyweight |
| Alice Ardelean | 12-7 | Women's Strawweight |
| Alice Pereira | 8-2 | Women's Bantamweight |
| Alik Lorenz | 8-2 | — |
| Aline Pereira | 3-3 | Women's Bantamweight |
| Alistair Overeem | 47-19 | Heavyweight |
| Alivia Bierley | 6-1 | Women's Bantamweight |
| Aljamain Sterling | 26-5-0 | Featherweight |
| Allan Goes | 2-3 | Middleweight |
| Allan Nascimento | 22-7 | Flyweight |
| Allan Zuniga | 13-2 | Welterweight |
| Allen Berube | 0-2 | Lightweight |
| Allen Crowder | 10-4 | Heavyweight |
| Allen Frye Jr. | 7-1 | Heavyweight |
| Alonzo Menifield | 19-6-1 | Light Heavyweight |
| Alptekin Ozkilic | 9-5 | Flyweight |
| Alvaro Herrera Mendoza | 1-3 | Lightweight |
| Alvi Dasuyev | 10-0 | Welterweight |
| Alvin Hines | 7-2 | Heavyweight |
| Alvin Robinson | 5-8 | — |
| Amanda Cooper | 4-5 | Women's Strawweight |
| Amanda Lemos | 15-8-1 | Women's Strawweight |
| Amanda Nunes | 23-5-0 | Women's Bantamweight |
| Amanda Ribas | 12-7 | Women's Strawweight |
| Amar Suloev | 5-5 | Middleweight |
| Amaury Bitetti | 2-1 | Welterweight |
| Amilcar Alves | 0-12 | Welterweight |
| Amir Albazi | 17-3-0 | Flyweight |
| Amir Sadollah | 6-5 | Welterweight |
| Ananias Mulumba | 10-4 | — |
| Anderson Dos Santos | 21-9 | Featherweight |
| Anderson Silva | 34-11 | Middleweight |
| Andrea Lee | 13-11 | Women's Flyweight |
| Andreas Gustafsson | 12-3 | Welterweight |
| Andreas Michailidis | 16-8 | Light Heavyweight |
| Andreas Stahl | 10-4 | Welterweight |
| Andre Ewell | 18-10 | Bantamweight |
| Andre Fialho | 16-9 | Welterweight |
| Andre Fili | 27-15 | Featherweight |
| Andre Gusmao | 6-3 | Middleweight |
| Andrei Arlovski | 34-24 | Heavyweight |
| Andrei Semenov | 5-5 | Middleweight |
| Andre Lima | 12-1 | Flyweight |
| Andre Muniz | 24-8 | Middleweight |
| Andre Pederneiras | 0-1 | Lightweight |
| Andre Petroski | 14-7 | Middleweight |
| Andre Roberts | 2-1 | Heavyweight |
| Andre Soukhamthath | 14-10 | Bantamweight |
| Andrew Craig | 9-4 | Welterweight |
| Andrew Holbrook | 12-3 | Lightweight |
| Andre Winner | 22-12 | Lightweight |
| Andrew Sanchez | 14-9 | Middleweight |
| Andrey Pulyaev | 10-6 | Middleweight |
| Andy Anderson | 0-1 | Open Weight |
| Andy Enz | 7-3 | Middleweight |
| Andy Ogle | 9-6 | Featherweight |
| Andy Wang | 0-2 | — |
| Angela Hill | 20-16 | Women's Strawweight |
| Angela Magana | 11-10 | Women's Strawweight |
| Ange Loosa | 10-5 | Welterweight |
| Angel Pacheco | 7-4 | Bantamweight |
| Anistavio Medeiros | 0-2 | — |
| Anna Elmose | 3-2 | Women's Strawweight |
| Anna Melisano | 6-2 | Women's Flyweight |
| Ansar Chalangov | 2-4 | — |
| Anshul Jubli | 7-2 | Lightweight |
| Ante Delija | 26-8 | Heavyweight |
| Anthony Birchak | 16-8 | Bantamweight |
| Anthony Christodoulou | 12-7 | Lightweight |
| Anthony Hamilton | 3-7 | Heavyweight |
| Anthony Hernandez | 15-4-1 | Middleweight |
| Anthony Ivy | 15-8 | Welterweight |
| Anthony Johnson | 23-6 | Light Heavyweight |
| Anthony Lapsley | 22-8 | Welterweight |
| Anthony Macias | 1-11 | Middleweight |
| Anthony Njokuani | 18-13 | Lightweight |
| Anthony Perosh | 15-10 | Light Heavyweight |
| Anthony Pettis | 25-14 | Lightweight |
| Anthony Rocco Martin | 18-6 | Welterweight |
| Anthony Romero | 0-1 | — |
| Anthony Smith | 38-22 | Light Heavyweight |
| Anthony Torres | 1-4 | — |
| Anthony Wint | 9-0 | Heavyweight |
| Antoni Hardonk | 8-6 | Heavyweight |
| Antonina Shevchenko | 11-4 | Women's Flyweight |
| Antonio Arroyo | 9-5 | Middleweight |
| Antonio Banuelos | 19-11 | Flyweight |
| Antonio Braga Neto | 9-3 | Middleweight |
| Antonio Carlos Junior | 7-5 | Middleweight |
| Antonio Carvalho | 15-6 | Featherweight |
| Antonio Dos Santos | 9-4 | Welterweight |
| Antonio McKee | 29-7 | — |
| Antonio Mendes | 3-8 | — |
| Antonio Monteiro | 18-6-2 | Featherweight |
| Antonio Rodrigo Nogueira | 34-10 | Heavyweight |
| Antonio Silva | 3-8-1 | — |
| Antonio Trocoli | 12-7-1 | Middleweight |
| Anton Kuivanen | 20-12 | Lightweight |
| Anton Turkalj | 8-4 | Light Heavyweight |
| Anton Zafir | 7-3 | Welterweight |
| Anying Wang | 2-2 | Welterweight |
| Aoriqileng | 26-14 | Bantamweight |
| Apollo Gomes | 13-2-1 | Bantamweight |
| Ariane Carnelossi | 15-5 | Women's Strawweight |
| Ariane da Silva | 18-12 | Women's Flyweight |
| Ariel Beck | 4-5 | Women's Flyweight |
| Arjan Bhullar | 11-3 | Heavyweight |
| Arlind Berisha | 5-1 | Light Heavyweight |
| Arman Tsarukyan | 26-3 | Lightweight |
| Armen Petrosyan | 9-5 | Middleweight |
| Arnold Allen | 21-4 | Featherweight |
| Artem Lobov | 14-15 | Featherweight |
| Artur Minev | 7-1 | Lightweight |
| Asaf Chopurov | 11-1 | Bantamweight |
| Asbel Cancio | 0-1 | Open Weight |
| Ashkan Mokhtarian | 13-3 | Flyweight |
| Ashlee Evans-Smith | 6-6 | Women's Flyweight |
| Ashley Yoder | 9-9 | Women's Strawweight |
| Askar Askarov | 15-1-1 | Flyweight |
| Askar Mozharov | 19-13 | Light Heavyweight |
| Aspen Ladd | 12-5 | Women's Bantamweight |
| Assuerio Silva | 4-6 | — |
| Asu Almabayev | 24-3-0 | Flyweight |
| Ateba Gautier | 11-2 | Middleweight |
| Augusto Mendes | 6-2 | Bantamweight |
| Augusto Montano | 15-3 | Welterweight |
| Augusto Sakai | 16-6 | Heavyweight |
| Austen Lane | 13-8 | Light Heavyweight |
| Austin Arnett | 16-7 | Featherweight |
| Austin Bashi | 15-3 | Featherweight |
| Austin Hubbard | 17-11 | Lightweight |
| Austin Lingo | 9-4 | Featherweight |
| Austin Springer | 12-4 | Featherweight |
| Austin Vanderford | 13-3 | Welterweight |
| Axel Sola | 13-1-1 | Lightweight |
| Azamat Bekoev | 20-5 | Middleweight |
| Azamat Gashimov | 8-3 | Flyweight |
| Azamat Murzakanov | 16-2 | Light Heavyweight |
| Azat Maksum | 15-3 | Flyweight |
| Azunna Anyanwu | 15-6 | Heavyweight |
| Baergeng Jieleyisi | 0-1 | Bantamweight |
| Baisangur Susurkaev | 12-0 | Middleweight |
| Barb Honchak | 10-5 | Women's Flyweight |
| Bartosz Fabinski | 15-6 | Welterweight |
| Bart Palaszewski | 36-17 | Featherweight |
| Bas Rutten | 4-2 | Heavyweight |
| Bassil Hafez | 9-4-1 | Welterweight |
| Batgerel Danaa | 12-5 | Bantamweight |
| Bea Malecki | 4-1 | Women's Bantamweight |
| Bec Rawlings | 8-9 | Women's Strawweight |
| Bekzat Almakhan | 12-4 | Bantamweight |
| Belal Muhammad | 24-6 | Welterweight |
| Bella Mir | 4-1 | — |
| Ben Alloway | 14-9 | Welterweight |
| Benardo Sopaj | 2-1 | Bantamweight |
| Ben Askren | 19-2 | Welterweight |
| Ben Earwood | 2-1 | Welterweight |
| Beneil Dariush | 23-8-1 | Lightweight |
| Benito Lopez | 10-2 | Bantamweight |
| Benji Radach | 4-5 | Middleweight |
| Ben Johnston | 5-2 | Middleweight |
| Ben Nguyen | 14-9 | Flyweight |
| Benoit Saint Denis | 17-4-0 | Lightweight |
| Ben Rothwell | 39-14 | Heavyweight |
| Ben Saunders | 23-13 | Welterweight |
| Benson Henderson | 30-13 | Lightweight |
| Ben Sosoli | 7-3 | Heavyweight |
| Bentley Syler | 5-1 | Flyweight |
| Ben Wall | 8-4 | Lightweight |
| Bernardo Magalhaes | 4-3 | Lightweight |
| Besam Yousef | 8-3 | Welterweight |
| Bethe Correia | 11-6-1 | Women's Bantamweight |
| Bevon Lewis | 7-6 | Middleweight |
| Bharat Kandare | 5-3 | Bantamweight |
| Bia Mesquita | 8-0-0 | Women's Bantamweight |
| Bilal Hasan | 10-0-0 | Flyweight |
| Bill Algeo | 18-9 | Featherweight |
| Bill Mahood | 2-6 | — |
| Bill Ray Goff | — | — |
| Billy Elekana | 10-3 | Light Heavyweight |
| Billy Miles | 0-1 | Welterweight |
| Billy Quarantillo | 18-8 | Lightweight |
| Billy Ray Goff | 9-5 | Welterweight |
| BJ Penn | 16-14-2 | Featherweight |
| Blagoy Ivanov | 19-7 | Heavyweight |
| Blake Bilder | 8-2 | Bantamweight |
| Blood Diamond | 3-3 | Welterweight |
| Bobby Hoffman | 4-5 | Heavyweight |
| Bobby Moffett | 16-6 | Featherweight |
| Bobby Nash | 12-5 | Welterweight |
| Bobby Southworth | 3-4 | Light Heavyweight |
| Bobby Voelker | 34-14 | Welterweight |
| Bob Cook | 1-0 | Lightweight |
| Bob Gilstrap | 0-4 | Heavyweight |
| Bogdan Grad | 16-4 | Featherweight |
| Bogdan Guskov | 18-4-1 | Light Heavyweight |
| BoHyun Park | — | — |
| Bojan Mihajlovic | 10-6 | Heavyweight |
| Bojan Velickovic | 18-11-1 | Welterweight |
| Bolaji Oki | 11-5 | Lightweight |
| Bo Nickal | 9-1-0 | Middleweight |
| Borislav Nikolic | 17-2 | Bantamweight |
| Boston Salmon | 8-4 | Bantamweight |
| Brad Blackburn | 6-6 | Welterweight |
| Brad Gumm | 1-3-1 | Welterweight |
| Brad Imes | 0-4 | Heavyweight |
| Brad Katona | 16-5 | Bantamweight |
| Brad Kohler | 1-5 | Heavyweight |
| Brad Morris | 0-5 | — |
| Brad Pickett | 25-14 | Catch Weight |
| Brad Riddell | 10-4 | Lightweight |
| Brad Scott | 3-5 | Welterweight |
| Brad Tavares | 23-13 | Middleweight |
| Brady Hiestand | 10-2 | Bantamweight |
| Branden Lee Hinkle | 2-5 | Heavyweight |
| Brandon Davis | 14-12 | Featherweight |
| Brandon Holmes | 6-2 | Middleweight |
| Brandon Jenkins | 18-12 | Lightweight |
| Brandon Melendez | 1-9 | — |
| Brandon Moreno | 24-10-2 | Flyweight |
| Brandon Royval | 18-9 | Flyweight |
| Brandon Thatch | 11-5 | Welterweight |
| Brandon Vera | 16-10 | Light Heavyweight |
| Brandon Wolff | 0-3 | Welterweight |
| Brando Pericic | 7-1 | Heavyweight |
| Braxton Smith | 5-2 | Heavyweight |
| Brendan Allen | 28-7 | Middleweight |
| Brendan Loughnane | 30-6 | Lightweight |
| Brendan O'Reilly | 6-4 | Welterweight |
| Brendan Schaub | 10-5 | Heavyweight |
| Brendon Marotte | 8-3 | Featherweight |
| Brendson Ribeiro | 18-12-1 | Light Heavyweight |
| Brett Johns | 20-5 | Bantamweight |
| Brian Bowles | 10-3 | Bantamweight |
| Brian Camozzi | 7-5 | Welterweight |
| Brian Cobb | 20-9 | Catch Weight |
| Brian Ebersole | 51-17 | Welterweight |
| Brian Foster | 3-5 | Middleweight |
| Brian Gassaway | 2-3 | Welterweight |
| Brian Geraghty | 0-6 | Lightweight |
| Brian Houston | 4-4 | Middleweight |
| Brian Johnston | 2-5 | Heavyweight |
| Brian Kelleher | 24-16 | Bantamweight |
| Brian Melancon | 7-3 | Welterweight |
| Brianna Fortino | 9-3 | Women's Strawweight |
| Brian Ortega | 16-5-0 | Featherweight |
| Brian Stann | 12-6 | Light Heavyweight |
| Bristol Marunde | 16-10 | Welterweight |
| Brock Jardine | 12-6 | Welterweight |
| Brock Larson | 42-10 | Catchweight |
| Brock Lesnar | 5-3 | Heavyweight |
| Brodie Farber | 0-3 | Catch Weight |
| Brogan Walker | 8-5 | Women's Flyweight |
| Brok Weaver | 16-6 | Welterweight |
| Bruce Whitehead | 0-1 | — |
| Bruna Brasil | 11-7-1 | Women's Strawweight |
| Brunno Ferreira | 15-5 | Middleweight |
| Bruno Korea | 12-4 | Flyweight |
| Bruno Lopes | 14-4 | Light Heavyweight |
| Bruno Santos | 4-2 | Featherweight |
| Bruno Silva | 23-13-0 | Middleweight |
| Bruno Souza | 0-3 | Welterweight |
| Bryan Barberena | 18-12 | Welterweight |
| Bryan Battle | 14-3 | Welterweight |
| Bryan Caraway | 21-10 | Bantamweight |
| Bryce Mitchell | 19-4 | Bantamweight |
| Bubba Bush | 8-3 | Middleweight |
| Buddy Roberts | 12-3 | Middleweight |
| Byron Bloodworth | 6-3 | Bantamweight |
| Cain Carrizosa | 11-5 | Lightweight |
| Cain Velasquez | 14-3 | Heavyweight |
| Caio Borralho | 18-2-0 | Middleweight |
| Caio Machado | 8-5-1 | Light Heavyweight |
| Caio Magalhaes | 10-7 | Middleweight |
| Cale Yarbrough | 3-3 | Light Heavyweight |
| Callan Potter | 18-9 | Featherweight |
| Callum Connor | 8-1 | Lightweight |
| Calvin Kattar | 23-10 | Featherweight |
| Cal Worsham | 1-3 | Heavyweight |
| Cameron Dollar | 11-4 | Lightweight |
| Cameron Else | 11-6 | Bantamweight |
| Cameron Saaiman | 9-3 | Bantamweight |
| Cameron Smotherman | 12-7 | Bantamweight |
| Cameron VanCamp | 15-7 | Lightweight |
| Camila Reynoso | 9-2 | Women's Strawweight |
| Cam Nelson | 1-0 | — |
| Cam Rowston | 15-4 | Middleweight |
| Caolan Loughran | 11-4 | Bantamweight |
| Caol Uno | 32-18-2 | Featherweight |
| Carla Esparza | 20-8 | Women's Strawweight |
| Carl Deaton | 17-7 | Lightweight |
| Carli Judice | 7-2-0 | Women's Flyweight |
| Carlo Pedersoli Jr. | 14-5 | Welterweight |
| Carlo Prater | 30-17 | Lightweight |
| Carlos Barreto | 3-6 | Light Heavyweight |
| Carlos Calderon | 0-1 | — |
| Carlos Candelario | 8-3 | Flyweight |
| Carlos Condit | 32-14 | Welterweight |
| Carlos Eduardo Rocha | 9-4 | Welterweight |
| Carlos Felipe | 12-4 | Heavyweight |
| Carlos Hernandez | 10-5 | Flyweight |
| Carlos Huachin | 10-7 | Bantamweight |
| Carlos Leal | 23-7 | Welterweight |
| Carlos Mota | 0-1 | — |
| Carlos Newton | 9-11 | Middleweight |
| Carlos Petruzzella | 15-2 | — |
| Carlos Prates | 24-7-0 | Welterweight |
| Carlos Ulberg | 15-1 | Light Heavyweight |
| Carlos Vera | 12-4 | Bantamweight |
| Carls John De Tomas | 6-4 | Flyweight |
| Carlston Harris | 19-8 | Welterweight |
| Carlton Minus | 12-5 | Welterweight |
| Carmelo Marrero | 5-4 | — |
| Carol Foro | 10-1 | Women's Strawweight |
| Caros Fodor | 11-6 | Lightweight |
| Casey Kenney | 16-4 | Bantamweight |
| Casey O'Neill | 12-3 | Women's Flyweight |
| Cathal Pendred | 17-4 | Welterweight |
| Cat Zingano | 14-5 | Women's Bantamweight |
| CB Dollaway | 17-10 | Middleweight |
| Cesar Almeida | 7-3-0 | Middleweight |
| Cesar Arzamendia | 7-5 | Featherweight |
| Cesar Marscucci | 1-0 | Lightweight |
| Cezar Ferreira | 14-11 | Middleweight |
| Cezary Oleksiejczuk | 17-3 | Middleweight |
| Chad Anheliger | 13-9 | Bantamweight |
| Chad Griggs | 11-3 | Light Heavyweight |
| Chad Laprise | 14-4 | Welterweight |
| Chad Mendes | 18-5 | Featherweight |
| Chad Reiner | 4-9 | — |
| Chael Sonnen | 30-17 | Light Heavyweight |
| Chance Rencountre | 16-5 | Welterweight |
| ChangHo Lee | 11-2 | Bantamweight |
| Chan-Mi Jeon | 0-2 | Women's Strawweight |
| Chan Sung Jung | 17-8 | Featherweight |
| Charalampos Grigoriou | 8-5 | Bantamweight |
| Charles Byrd | 10-7 | Middleweight |
| Charles Johnson | 20-9-0 | Flyweight |
| Charles Jourdain | 18-9-1 | Bantamweight |
| Charles McCarthy | 1-2 | Middleweight |
| Charles Oliveira | 37-11-0 | Lightweight |
| Charles Radtke | 12-5-0 | Welterweight |
| Charles Rosa | 16-8 | Featherweight |
| Charlie Brenneman | 19-8 | Lightweight |
| Charlie Campbell | 10-3 | Lightweight |
| Charlie Cleveland | 6-2 | Heavyweight |
| Charlie Ontiveros | 11-9 | Middleweight |
| Charlie Valencia | 12-7 | Bantamweight |
| Charlie Ward | 9-7 | Welterweight |
| Chase Gormley | 14-8 | Heavyweight |
| Chase Hooper | 17-5-1 | Lightweight |
| Chase Sherman | 16-12 | Heavyweight |
| Chas Skelly | 19-3 | Featherweight |
| Cheick Kongo | 31-12-1 | Heavyweight |
| Chelsea Chandler | 8-4 | Women's Bantamweight |
| Che Mills | 16-10 | Welterweight |
| Chepe Mariscal | 18-7-1 | Featherweight |
| Cheyanne Vlismas | 7-3 | Women's Strawweight |
| Chico Camus | 18-8 | Flyweight |
| Chidi Njokuani | 26-12-1 | Welterweight |
| Chris Avila | 8-10 | Featherweight |
| Chris Barnett | 23-10 | Heavyweight |
| Chris Beal | 10-8 | Flyweight |
| Chris Brennan | 2-3 | Welterweight |
| Chris Camozzi | 26-15 | Middleweight |
| Chris Cariaso | 17-8 | Flyweight |
| Chris Clements | 12-6 | Welterweight |
| Chris Condo | 0-1 | Heavyweight |
| Chris Cope | 2-3 | Welterweight |
| Chris Curtis | 32-13 | Welterweight |
| Chris Daukaus | 12-7 | Heavyweight |
| Chris de la Rocha | 5-3 | Heavyweight |
| Chris Dempsey | 11-7 | Middleweight |
| Chris Duncan | 15-3-0 | Lightweight |
| Chris Fishgold | 18-5 | Featherweight |
| Chris Gruetzemacher | 16-5 | Lightweight |
| Chris Gutierrez | 22-7-2 | Bantamweight |
| Chris Haseman | 2-8 | Heavyweight |
| Chris Heatherly | 9-4 | Welterweight |
| Chris Holdsworth | 6-0 | Bantamweight |
| Chris Indich | 4-3 | Welterweight |
| Chris Kelades | 11-4 | Flyweight |
| Chris Leben | 25-11 | Middleweight |
| Chris Liguori | 2-8 | — |
| Chris Lytle | 31-23 | Welterweight |
| Chris Padilla | 18-6-1 | Lightweight |
| Chris Price | 0-2 | Middleweight |
| Chris Sanford | 0-1 | Middleweight |
| Chris Saunders | 0-6 | Lightweight |
| Chris Spang | 5-3 | Welterweight |
| Christian Aguilera | 14-8 | Welterweight |
| Christian Colombo | 8-4-1 | Heavyweight |
| Christian Echols | 8-5 | Middleweight |
| Christian Edwards | 9-5 | Light Heavyweight |
| Christian Leroy Duncan | 16-3 | Middleweight |
| Christian Morecraft | 7-3 | Heavyweight |
| Christian Natividad | 10-0 | Flyweight |
| Christian Rodriguez | 13-4 | Featherweight |
| Christian Wellisch | 2-4 | Light Heavyweight |
| Chris Tickle | 0-5 | — |
| Christina Marks | 8-11 | Women's Flyweight |
| Christophe Leninger | 0-2 | Lightweight |
| Christos Giagos | 20-13 | Lightweight |
| Chris Tuchscherer | 21-4 | Heavyweight |
| Chris Wade | 24-10 | Lightweight |
| Chris Weidman | 16-8 | Middleweight |
| Chris Wilson | 4-7 | Lightweight |
| Chuck Liddell | 21-9 | Light Heavyweight |
| Chuck O'Neil | 17-10 | Welterweight |
| Cindy Dandois | 16-7 | Women's Bantamweight |
| Ciryl Gane | 14-2-0 | Heavyweight |
| CJ Fernandes | 1-3-1 | — |
| CJ Keith | 8-3 | Lightweight |
| CJ Vergara | 12-7-1 | Flyweight |
| Claude Patrick | 14-2 | Welterweight |
| Claudia Gadelha | 18-5 | Women's Strawweight |
| Claudio Puelles | 13-6 | Lightweight |
| Claudio Ribeiro | 11-5 | Middleweight |
| Claudio Silva | 5-3 | Welterweight |
| Clay Collard | 24-16 | Featherweight |
| Clay Guida | 38-24 | Lightweight |
| Clay Harvison | 14-7 | Lightweight |
| Clayton Carpenter | 8-3 | Flyweight |
| Clifford Starks | 13-5 | Middleweight |
| Clint Hester | 10-6 | Middleweight |
| CM Punk | 0-1 | Welterweight |
| Cody Brundage | 12-9-1 | Middleweight |
| Cody Chovancek | 9-1 | Bantamweight |
| Cody Donovan | 8-5 | Light Heavyweight |
| Cody Durden | 19-11-1 | Flyweight |
| Cody East | 14-5 | Heavyweight |
| Cody Garbrandt | 15-8 | Bantamweight |
| Cody Gibson | 22-13 | Bantamweight |
| Cody Haddon | 9-1 | Bantamweight |
| Cody McKenzie | 16-11 | — |
| Cody Pfister | 13-9 | Lightweight |
| Cody Stamann | 21-8-1 | Bantamweight |
| Colby Covington | 17-5 | Welterweight |
| Colby Thicknesse | 10-1 | Bantamweight |
| Cole Escovedo | 17-8 | Bantamweight |
| Cole Miller | 21-11 | Featherweight |
| Cole Smith | 7-3 | Bantamweight |
| Cole Williams | 0-2 | Welterweight |
| Colin Fletcher | 16-9 | Lightweight |
| Colin Robinson | 0-8 | — |
| Collin Anglin | 9-5 | Featherweight |
| Collin Hart | 4-4 | Middleweight |
| Colton Loud | 7-2 | Flyweight |
| Colton Smith | 7-5 | Lightweight |
| Connor Matthews | 7-5 | Featherweight |
| Conor McGregor | 22-7 | Welterweight |
| Constantinos Philippou | 13-5 | Middleweight |
| Corey Anderson | 21-6 | Light Heavyweight |
| Corey Hill | 6-9 | Welterweight |
| Cortavious Romious | 9-4 | Bantamweight |
| Cortney Casey | 10-10 | Women's Flyweight |
| Cory Hendricks | 9-6 | Light Heavyweight |
| Cory McKenna | 8-4 | Women's Strawweight |
| Cory Sandhagen | 18-7 | Bantamweight |
| Cory Walmsley | 0-1 | Light Heavyweight |
| Court McGee | 30-18 | Welterweight |
| Courtney Turner | 0-1 | Lightweight |
| Crafton Wallace | 2-3 | Middleweight |
| Craig White | 14-12 | Welterweight |
| Cristiane Justino | 6-1 | Featherweight |
| Cristiano Marcello | 13-6 | Lightweight |
| Cristian Perez | 1-1 | Lightweight |
| Cristian Pérez | 16-2 | — |
| Cristian Quinonez | 19-5 | Bantamweight |
| Cristina Stanciu | 5-3 | Women's Strawweight |
| Cub Swanson | 31-14 | Featherweight |
| Cung Le | 9-3 | Middleweight |
| Curtis Blaydes | 20-6 | Heavyweight |
| Curtis Millender | 21-9 | Welterweight |
| Curtis Stout | 0-8 | Middleweight |
| Curt Warburton | 13-6 | Lightweight |
| Cynthia Calvillo | 9-6-1 | Women's Flyweight |
| Cyril Asker | 9-4 | Heavyweight |
| Cyrille Diabate | 19-10 | Light Heavyweight |
| Dagiisuren Chagnaadorj | 11-2-0 | Featherweight |
| Daichi Abe | 7-4 | Welterweight |
| Daiju Takase | 4-8 | Welterweight |
| Dakota Bush | 16-4 | Lightweight |
| Dakota Hope | 12-2 | Featherweight |
| Dalcha Lungiambula | 11-6 | Light Heavyweight |
| Dale Hartt | 1-2 | Lightweight |
| Damacio Page | 20-10 | Bantamweight |
| DaMarques Johnson | 15-14 | Welterweight |
| Damian Grabowski | 21-5 | Heavyweight |
| Damian Pinas | 11-1 | Middleweight |
| Damian Piwowarczyk | 12-4 | Light Heavyweight |
| Damian Rzepecki | 10-1 | Lightweight |
| Damian Stasiak | 13-11 | Bantamweight |
| Damien Anderson | 5-1 | Featherweight |
| Damien Brown | 19-13 | Lightweight |
| Damir Hadzovic | 15-8 | Lightweight |
| Damir Ismagulov | 24-3 | Lightweight |
| Da'Mon Blackshear | 17-8-1 | Bantamweight |
| Damon Jackson | 23-8-1 | Lightweight |
| Dan Argueta | 9-3 | Bantamweight |
| Dan Barrera | 0-1 | Welterweight |
| Dan Bobish | 2-6 | Heavyweight |
| Dan Christison | 2-5 | Heavyweight |
| Dan Cramer | 11-4 | Middleweight |
| Dan Evensen | 1-2 | Heavyweight |
| Dan Hardy | 25-10 | Welterweight |
| Dan Henderson | 32-15 | Middleweight |
| Dan Hooker | 24-15-0 | Lightweight |
| Daniel Barez | 17-8 | Flyweight |
| Daniel Cormier | 22-3 | Heavyweight |
| Daniel Frunza | 9-4 | Welterweight |
| Daniel Jolly | 5-4 | Light Heavyweight |
| Daniel Kelly | 14-4 | Middleweight |
| Daniel Lacerda | 11-6 | Flyweight |
| Danielle Taylor | 11-8 | Women's Strawweight |
| Daniel Marcos | 18-1 | Bantamweight |
| Daniel Omielanczuk | 26-15 | Heavyweight |
| Daniel Pineda | 28-17-2 | Featherweight |
| Daniel Roberts | 15-7 | Welterweight |
| Daniel Rodriguez | 20-6 | Welterweight |
| Daniel Santos | 15-3 | Featherweight |
| Daniel Sarafian | 12-6 | Welterweight |
| Daniel Spitz | 6-3 | Heavyweight |
| Daniel Spohn | 0-1 | Light Heavyweight |
| Daniel Teymur | 8-4 | Featherweight |
| Daniel Zellhuber | 16-4 | Lightweight |
| Dan Ige | 20-12 | Featherweight |
| Daniil Donchenko | 17-2 | Welterweight |
| Danillo Villefort | 15-6 | Middleweight |
| Danilo Belluardo | 13-7 | Lightweight |
| Danilo Marques | 15-6 | Light Heavyweight |
| Dan Lauzon | 17-6 | Welterweight |
| Dan Miller | 14-9 | Middleweight |
| Dan Moret | 16-9 | Featherweight |
| Danny Abbadi | 0-2 | Lightweight |
| Danny Barlow | 9-2 | Middleweight |
| Danny Castillo | 17-10 | Lightweight |
| Danny Chavez | 11-5-1 | Featherweight |
| Danny Downes | 8-3 | Lightweight |
| Danny Henry | 12-4 | Featherweight |
| Danny Martinez | 17-9 | Flyweight |
| Danny Mitchell | 14-6 | Welterweight |
| Danny Roberts | 18-9 | Welterweight |
| Danny Silva | 11-2 | Featherweight |
| Dan Severn | 100-19 | Heavyweight |
| Dan Stittgen | 7-6 | Welterweight |
| Dante Rivera | 16-7 | Welterweight |
| Danyelle Wolf | 1-1 | Women's Featherweight |
| Darian Weeks | 6-4 | Welterweight |
| Daria Zhelezniakova | 10-4 | Women's Bantamweight |
| Darko Stosic | 19-6 | Heavyweight |
| Daron Cruickshank | 21-14 | Lightweight |
| Darrel Gholar | 0-1 | Middleweight |
| Darrell Horcher | 13-6 | Lightweight |
| Darrell Montague | 12-5 | Flyweight |
| Darren Elkins | 30-13 | Featherweight |
| Darren Stewart | 16-10 | Middleweight |
| Darren Till | 19-5-1 | Middleweight |
| Darren Uyenoyama | 10-6 | Flyweight |
| Darrick Minner | 26-14 | Bantamweight |
| Darrill Schoonover | 13-7 | Heavyweight |
| Darrius Flowers | 13-8-1 | Lightweight |
| Dashon Johnson | 9-2 | Featherweight |
| Dave Beneteau | 3-3 | Heavyweight |
| Dave Berry | 0-1 | Open Weight |
| Dave Galera | 5-1 | Bantamweight |
| Dave Herman | 23-6 | Heavyweight |
| Dave Menne | 7-8 | Middleweight |
| Dave Strasser | 3-3 | Welterweight |
| Davey Grant | 19-12 | Bantamweight |
| Davi Cabral | 7-1 | Middleweight |
| David Abbott | 10-15 | Heavyweight |
| David Baron | 3-3 | Lightweight |
| David Bielkheden | 4-7 | Lightweight |
| David Branch | 22-7 | Middleweight |
| David Dodd | 1-3 | Middleweight |
| David Dvorak | 20-6 | Flyweight |
| David Heath | 4-7 | Light Heavyweight |
| David Hood | 0-1 | Open Weight |
| David Kaplan | 0-3 | Lightweight |
| David Lee | 0-2 | Lightweight |
| David Levicki | 0-1 | Open Weight |
| David Loiseau | 23-11 | Light Heavyweight |
| David Martinez | 17-1 | Bantamweight |
| David Michaud | 18-6 | Welterweight |
| David Mitchell | 20-7 | Welterweight |
| David Onama | 14-3 | Featherweight |
| David Roberts | 0-2 | Lightweight |
| David Terrell | 6-2 | Middleweight |
| David Teymur | 8-2 | Lightweight |
| David Velasquez | 0-4 | Lightweight |
| David Zawada | 19-10 | Welterweight |
| Davi Ramos | 10-4 | Lightweight |
| Da Woon Jung | 15-6-1 | Light Heavyweight |
| Dean Barry | 4-2 | Welterweight |
| Dean Lister | 12-7 | Middleweight |
| DeAnna Bennett | 14-9-1 | Women's Flyweight |
| Deiveson Figueiredo | 25-8-1 | Bantamweight |
| Delphine Benouaich | 8-2 | Women's Strawweight |
| Delson Heleno | 4-6 | Welterweight |
| Demetrious Johnson | 25-4-1 | Flyweight |
| Demian Maia | 28-11 | Welterweight |
| Denise Gomes | 13-3 | Women's Strawweight |
| Denis Kang | 35-16 | Middleweight |
| Denis Stojnic | 9-2 | Heavyweight |
| Denis Tiuliulin | 10-10 | Middleweight |
| Dennis Bermudez | 18-9 | Featherweight |
| Dennis Buzukja | 12-6-1 | Featherweight |
| Dennis Hallman | 52-20 | Lightweight |
| Dennis Siver | 23-11 | Featherweight |
| Denys Bondar | 14-5 | Flyweight |
| Denzel Freeman | 7-2 | Heavyweight |
| Dequan Townsend | 22-13 | Light Heavyweight |
| Derek Brunson | 24-9 | Middleweight |
| Derek Downey | 0-3 | Middleweight |
| Deron Winn | 7-3 | Middleweight |
| Derrick Krantz | 24-12 | Welterweight |
| Derrick Lewis | 29-14-1 | Heavyweight |
| Derrick Noble | 5-10 | Lightweight |
| Desmond Green | 23-8 | Lightweight |
| Devin Clark | 14-9 | Light Heavyweight |
| Devin Powell | 12-5 | Lightweight |
| Devonte Smith | 11-4 | Lightweight |
| Dhiego Lima | 17-9 | Welterweight |
| Diana Belbita | 15-10 | Women's Flyweight |
| Diego Brandao | 31-22 | Featherweight |
| Diego Ferreira | 20-8 | Lightweight |
| Diego Lopes | 28-8-0 | Featherweight |
| Diego Nunes | 22-8 | Featherweight |
| Diego Rivas | 8-2 | Featherweight |
| Diego Sanchez | 31-14 | Welterweight |
| Diego Saraiva | 3-10 | Lightweight |
| Dieusel Berto | 0-1 | Open Weight |
| Dileno Lopes | 19-3 | Bantamweight |
| Ding Meng | 35-12 | Welterweight |
| Din Thomas | 26-9 | Featherweight |
| Dione Barbosa | 10-4 | Women's Flyweight |
| Diyar Nurgozhay | 12-2 | Light Heavyweight |
| Djorden Santos | 11-4 | Middleweight |
| Dmitrii Smoliakov | 9-3 | Heavyweight |
| Dmitri Stepanov | 0-1 | Heavyweight |
| Dmitry Sosnovskiy | 11-0 | Heavyweight |
| Dokonjonosuke Mishima | 4-7 | Lightweight |
| Domingo Pilarte | 8-3 | Bantamweight |
| Dominick Cruz | 24-4 | Bantamweight |
| Dominick Reyes | 17-6 | Light Heavyweight |
| Dominic Waters | 0-3 | Welterweight |
| Dominique Steele | 17-11 | Welterweight |
| Dom Mar Fan | 9-3 | Lightweight |
| Donald Cerrone | 36-17 | Lightweight |
| Don Frye | 12-6 | Heavyweight |
| DongHun Choi | 9-0 | Flyweight |
| Dong Hyun Kim | 22-4 | Welterweight |
| Dong Hyun Ma | 16-12 | Lightweight |
| Dongi Yang | 13-3 | Middleweight |
| Don Madge | 13-5 | Lightweight |
| Donnie Chappell | 0-1 | Lightweight |
| Donny Walker | 1-6 | Bantamweight |
| Don Shainis | 15-8 | Featherweight |
| Don'Tale Mayes | 11-9 | Heavyweight |
| Donte Johnson | 9-0-0 | Middleweight |
| Dooho Choi | 20-5-1 | Featherweight |
| Dorian Price | 0-1 | Welterweight |
| Doug Evans | 0-4 | Lightweight |
| Douglas da Lapa | 7-0 | Middleweight |
| Douglas Rodrigues | 7-2 | — |
| Douglas Silva de Andrade | 29-7-1 | Featherweight |
| Drakkar Klose | 19-5-1 | Lightweight |
| Drako Rodriguez | 7-4 | Bantamweight |
| Drew Dober | 29-15-0 | Lightweight |
| Drew Fickett | 13-16 | Lightweight |
| Drew McFedries | 10-7 | Middleweight |
| Dricus Du Plessis | 24-3 | Middleweight |
| Duane Ludwig | 21-14 | Welterweight |
| Duda Santana | 3-1 | Women's Bantamweight |
| Dusko Todorovic | 14-7 | Middleweight |
| Dustin Hazelett | 12-7 | Lightweight |
| Dustin Jacoby | 22-11-1 | Light Heavyweight |
| Dustin Kimura | 11-3 | Bantamweight |
| Dustin Neace | 2-6 | Featherweight |
| Dustin Ortiz | 20-8 | Flyweight |
| Dustin Pague | 11-11 | Bantamweight |
| Dustin Poirier | 30-10 | Lightweight |
| Dustin Stoltzfus | 17-9 | Middleweight |
| Dwayne Cason | 1-1 | Heavyweight |
| Dwight Grant | 11-6 | Welterweight |
| Dylan Andrews | 18-10 | Middleweight |
| Dylan Budka | 7-5 | Middleweight |
| Ebenezer Fontes Braga | 2-6 | Heavyweight |
| Eddie Alvarez | 30-8 | Lightweight |
| Eddie Gordon | 8-8 | Middleweight |
| Eddie Mendez | 7-4 | Middleweight |
| Eddie Ruiz | 0-1 | Lightweight |
| Eddie Sanchez | 4-9 | Heavyweight |
| Eddie Wineland | 25-16 | Bantamweight |
| Eddie Yagin | 16-5 | Featherweight |
| Edgar Chairez | 14-7 | Flyweight |
| Edgar Garcia | 14-5 | Welterweight |
| Ed Herman | 27-16 | Light Heavyweight |
| Edilberto de Oliveira | 3-10 | Welterweight |
| Edimilson Souza | 17-5 | Featherweight |
| Edmen Shahbazyan | 18-6 | Middleweight |
| Ednaldo Oliveira | 14-7 | Light Heavyweight |
| Ednilson Santos | 14-8-1 | Lightweight |
| Edson Barboza | 24-15 | Lightweight |
| Eduarda Moura | 12-3 | Women's Flyweight |
| Eduardo Chapolin | 0-1 | — |
| Eduardo Garagorri | 14-3 | Featherweight |
| Eduardo Henrique da Silva | 0-1-0 | — |
| Edward Faaloloto | 2-4 | Lightweight |
| Edwin DeWees | 0-5 | Middleweight |
| Edwin Figueroa | 9-5 | Bantamweight |
| Efrain Escudero | 30-15 | Lightweight |
| Eiji Mitsuoka | 18-9 | Featherweight |
| Eldo Xavier Dias | 0-1 | Open Weight |
| Elias Garcia | 7-2 | Flyweight |
| Elias Silverio | 13-3 | Lightweight |
| Elias Theodorou | 20-3 | Middleweight |
| Elijah Smith | 4-0 | Bantamweight |
| Eliot Marshall | 10-4 | Light Heavyweight |
| Elise Reed | 8-7 | Women's Strawweight |
| Elisha Ellison | 5-3 | Heavyweight |
| Elizabeth Phillips | 6-8 | Women's Bantamweight |
| Elizeu Zaleski dos Santos | 26-10-1 | Welterweight |
| Elves Brener | 17-7 | Lightweight |
| Elvis Mutapcic | 15-5-1 | Middleweight |
| Elvis Sinosic | 1-6 | Light Heavyweight |
| Emilio Quissua | 8-1 | Light Heavyweight |
| Emil Meek | 10-6 | Welterweight |
| Emily Ducote | 15-9 | Women's Strawweight |
| Emily Kagan | 3-3 | Women's Strawweight |
| Emily Whitmire | 5-5 | Women's Flyweight |
| Emmanuel Yarborough | 0-1 | Heavyweight |
| Enrique Barzola | 21-9-1 | Bantamweight |
| Enrique Marin | 9-4 | Welterweight |
| Enson Inoue | 3-4 | Heavyweight |
| Ericka Almeida | 8-3 | Women's Strawweight |
| Erick Gonzalez | 14-8 | Lightweight |
| Erick Montano | 7-6 | Welterweight |
| Erick Silva | 20-11 | Featherweight |
| Erick Visconde | 18-3 | Featherweight |
| Eric Martin | 0-1 | — |
| Eric McConico | 11-5-1 | Middleweight |
| Eric Nolan | 1-3 | Lightweight |
| Eric Schafer | 13-7 | Middleweight |
| Eric Shelton | 18-8 | Flyweight |
| Eric Spicely | 12-8 | Middleweight |
| Eric Wisely | 31-9 | Lightweight |
| Erik Koch | 16-6 | Lightweight |
| Erik Perez | 20-9 | Bantamweight |
| Erik Silva | 9-4 | Featherweight |
| Erin Blanchfield | 14-3 | Women's Flyweight |
| Ernesta Kareckaite | 6-2-2 | Women's Flyweight |
| Ernest Chavez | 10-2 | Featherweight |
| Ernie Verdicia | 0-1 | Open Weight |
| Eryk Anders | 18-9 | Middleweight |
| Esteban Ribovics | 17-3 | Lightweight |
| Estevan Payan | 16-13 | Featherweight |
| Ethyn Ewing | 10-2 | Bantamweight |
| Eugene Jackson | 6-6 | Middleweight |
| Eugenio Tadeu | 0-1 | Lightweight |
| Evan Dunham | 18-9-1 | Lightweight |
| Evan Elder | 10-2-0 | Lightweight |
| Evan Tanner | 13-7 | Middleweight |
| Ezra Elliott | 8-0 | Featherweight |
| Fabiano Iha | 4-5 | Lightweight |
| Fabiano Scherner | 1-6 | Heavyweight |
| Fabia Sintes | 12-3 | Flyweight |
| Fabio Cherant | 7-5 | Light Heavyweight |
| Fabio Gurgel | 0-1 | Open Weight |
| Fabio Maldonado | 24-15 | Light Heavyweight |
| Fabricio Camoes | 14-11-1 | Lightweight |
| Fabricio Werdum | 24-9 | Heavyweight |
| Fabrizio Escarrega | 9-2 | — |
| Falaniko Vitale | 5-8 | Middleweight |
| Fares Ziam | 18-6 | Lightweight |
| Farid Basharat | 16-0 | Bantamweight |
| Farman Hasanov | 6-1 | Welterweight |
| Fatima Kline | 10-1 | Women's Strawweight |
| Felice Herrig | 14-10 | Women's Strawweight |
| Felicia Spencer | 9-4 | Women's Featherweight |
| Felipe Arantes | 18-10-1 | Bantamweight |
| Felipe Bunes | 14-9 | Flyweight |
| Felipe Colares | 11-4 | Bantamweight |
| Felipe dos Santos | 8-3-1 | Flyweight |
| Felipe Franco | 11-3 | Light Heavyweight |
| Felipe Lima | 15-2 | Featherweight |
| Felipe Olivieri | 14-6 | Lightweight |
| Felipe Silva | 2-4 | Bantamweight |
| Felix Lee Mitchell | 0-3 | Open Weight |
| Feng Xiaocan | 10-4 | Women's Strawweight |
| Fernando Bruno | 3-4 | Featherweight |
| Fernando Padilla | 16-7 | Featherweight |
| Fernie Garcia | 10-5 | Bantamweight |
| Filip Pejic | 15-7 | Bantamweight |
| Flavio Luiz Moura | 1-4 | Welterweight |
| Floyd Sword | 0-1 | Middleweight |
| Forrest Griffin | 19-7 | Light Heavyweight |
| Forrest Petz | 6-8 | Welterweight |
| Francesco Maturi | 0-1 | Open Weight |
| Francesco Nuzzi | 1-0 | — |
| Francimar Barroso | 25-7 | Light Heavyweight |
| Francis Carmont | 25-12 | Middleweight |
| Francisco Figueiredo | 13-5 | Flyweight |
| Francisco Prado | 13-5 | Welterweight |
| Francisco Rivera | 16-11 | Bantamweight |
| Francisco Trevino | 13-3 | Lightweight |
| Francisco Trinaldo | 28-9 | Lightweight |
| Francis Marshall | 10-4 | Featherweight |
| Francis Ngannou | 19-3 | Heavyweight |
| Frank Camacho | 22-10 | Lightweight |
| Frank Caracci | 0-1 | Lightweight |
| Frank Hamaker | 1-0 | Open Weight |
| Frankie Edgar | 23-11-1 | Bantamweight |
| Frankie Perez | 10-4 | Lightweight |
| Frankie Saenz | 13-7 | Bantamweight |
| Frank Lester | 0-3 | Middleweight |
| Frank Mir | 19-13 | Heavyweight |
| Frank Shamrock | 9-3 | Catch Weight |
| Frank Trigg | 21-9 | Welterweight |
| Fred Ettish | 0-1 | Open Weight |
| Fredson Paixao | 4-5 | Featherweight |
| Fredy Serrano | 3-2 | Flyweight |
| Gabe Green | 12-5 | Lightweight |
| Gabe Ruediger | 17-7 | Lightweight |
| Gable Steveson | 4-1 | Heavyweight |
| Gabriel Benitez | 24-13 | Featherweight |
| Gabriel Bonfim | 20-1 | Welterweight |
| Gabriel Gonzaga | 17-12 | Heavyweight |
| Gabriella Fernandes | 11-5 | Women's Flyweight |
| Gabriel Lorenco | 0-1 | — |
| Gabriel Lorenço | 1-0 | — |
| Gabriel Lourenço | 7-1-0 | Heavyweight |
| Gabriel Miranda | 17-8 | Featherweight |
| Gabriel Santos | 12-2 | Featherweight |
| Gabriel Silva | 0-2 | Bantamweight |
| Gadzhimurad Antigulov | 20-9 | Light Heavyweight |
| Gadzhi Omargadzhiev | 13-2 | Middleweight |
| Gaetano Pirrello | 17-7 | Featherweight |
| Galore Bofando | 6-3 | Welterweight |
| Gan McGee | 4-4 | Heavyweight |
| Garett Whiteley | 6-3 | Lightweight |
| Garreth McLellan | 13-6 | Middleweight |
| Garrett Armfield | 10-5 | Bantamweight |
| Gary Balletto | 11-4 | — |
| Gary Goodridge | 14-17 | Heavyweight |
| Gasan Umalatov | 18-5 | Welterweight |
| Gaston Bolanos | 10-5 | Featherweight |
| Gauge Young | 11-4 | Lightweight |
| Gavin Tucker | 13-3 | Featherweight |
| Geane Herrera | 9-3 | Flyweight |
| Gegard Mousasi | 49-9 | Middleweight |
| Genaro Valdez | 10-3 | Lightweight |
| Genki Sudo | 5-2 | Bantamweight |
| Geoff Neal | 16-8 | Welterweight |
| George Mangos | 7-1-0 | Featherweight |
| George Roop | 15-13 | Featherweight |
| George Sotiropoulos | 14-7 | Lightweight |
| Georges St-Pierre | 26-2 | Middleweight |
| George Staines | 9-0 | Lightweight |
| George Sullivan | 18-7 | Welterweight |
| Gerald Harris | 25-8 | Middleweight |
| Gerald Meerschaert | 38-24 | Middleweight |
| Geraldo de Freitas | 12-7 | Bantamweight |
| Gerald Strebendt | 0-4 | Lightweight |
| Germaine de Randamie | 10-5 | Women's Bantamweight |
| Gerry Harris | 0-1 | Open Weight |
| Geza Kalman | 1-2 | Light Heavyweight |
| Gianni Vazquez | 14-6-1 | Featherweight |
| Gian Villante | 17-14 | Light Heavyweight |
| Gideon Ray | 0-9 | Middleweight |
| Giga Chikadze | 15-7 | Featherweight |
| Gigi Canuto | 7-2 | Women's Strawweight |
| Gilbert Aldana | 0-2 | Heavyweight |
| Gilbert Burns | 22-10 | Welterweight |
| Gilbert Melendez | 22-8 | Lightweight |
| Gilbert Smith | 13-7 | Welterweight |
| Gilbert Urbina | 9-6 | Middleweight |
| Gilbert Yvel | 38-16 | Light Heavyweight |
| Gil Castillo | 2-3 | Welterweight |
| Gillian Robertson | 17-9 | Women's Strawweight |
| Gina Mazany | 8-6 | Women's Bantamweight |
| Glaico Franca Moreira | 1-2 | Lightweight |
| Gleison Tibau | 37-17 | Lightweight |
| Gloria de Paula | 6-7 | Women's Strawweight |
| Glover Teixeira | 33-9 | Light Heavyweight |
| Godofredo Pepey | 14-7 | Featherweight |
| Gokhan Saki | 1-2 | Light Heavyweight |
| Gokhan Saricam | 11-2 | Heavyweight |
| Goran Reljic | 15-6 | Heavyweight |
| Grant Dawson | 28-3-1 | Lightweight |
| Gray Maynard | 13-8-1 | Featherweight |
| Greg Foster | 9-1 | Lightweight |
| Greg Hardy | 4-5 | Heavyweight |
| Gregor Gillespie | 15-1 | Lightweight |
| Gregory Rodrigues | 20-6 | Middleweight |
| Greg Soto | 9-3 | Welterweight |
| Greg Stott | 0-1 | Heavyweight |
| Grigory Popov | 0-2 | Bantamweight |
| Guangyou Ning | 5-4 | Bantamweight |
| Guido Cannetti | 10-8 | Bantamweight |
| Guilherme Pat | 6-2 | Heavyweight |
| Guilherme Uriel | 8-2 | — |
| Guilherme Vasconcelos | 10-6 | Middleweight |
| Gunnar Nelson | 19-6-1 | Welterweight |
| Guram Kutateladze | 13-5 | Lightweight |
| Gustavo Lopez | 13-8-1 | Bantamweight |
| Guto Inocente | 6-6 | Light Heavyweight |
| Guy Mezger | 8-7 | Middleweight |
| Hacran Dias | 23-7 | Featherweight |
| Hailey Cowan | 7-6 | Women's Bantamweight |
| Hakeem Dawodu | 13-4 | Featherweight |
| Hamdy Abdelwahab | 7-1 | Heavyweight |
| Hannah Cifers | 10-7 | Women's Strawweight |
| Hannah Goldy | 7-4 | Women's Strawweight |
| Hans Stringer | 22-7 | Light Heavyweight |
| Harold Howard | 1-2 | Open Weight |
| Harry Hardwick | 13-5-1 | Featherweight |
| Harry Hunsucker | 7-6 | Heavyweight |
| Harry Moskowitz | 0-3 | Heavyweight |
| Hatsu Hioki | 29-12 | Featherweight |
| Hayato Sakurai | 18-10 | Welterweight |
| Hayder Hassan | 7-4 | Welterweight |
| Heather Clark | 8-6 | Women's Strawweight |
| Heath Herring | 26-16 | Heavyweight |
| Hecher Sosa | 15-1-0 | Bantamweight |
| Hector Aldana | 4-4 | Welterweight |
| Hector Lombard | 35-10 | Welterweight |
| Hector Ramirez | 3-5 | Light Heavyweight |
| Hector Sandoval | 14-4 | Flyweight |
| Hector Santiago | 1-0 | — |
| Hector Urbina | 17-11 | Welterweight |
| He-Man Gipson | 0-2 | — |
| Henrique da Silva | 7-6 | Heavyweight |
| Henry Briones | 16-8 | Bantamweight |
| Henry Cejudo | 16-6 | Bantamweight |
| Henry Martinez | 9-4 | Lightweight |
| Herbert Burns | 11-6 | Featherweight |
| Hermes Franca | 23-13 | Lightweight |
| Hernani Perpetuo | 17-7 | Welterweight |
| Holly Holm | 15-9 | Women's Bantamweight |
| Homer Moore | 1-4 | Heavyweight |
| Horacio Gutierrez | 8-3 | Featherweight |
| Houston Alexander | 16-15 | Light Heavyweight |
| Houston Dorr | 0-1 | Heavyweight |
| Hugo Duarte | 0-2 | Open Weight |
| Hugo Guillon | 7-2-1 | Middleweight |
| Hugo Viana | 8-5 | Bantamweight |
| Humberto Bandenay | 27-10 | Featherweight |
| Humberto Brown Morrison | 0-1 | Featherweight |
| Hunter Azure | 11-4 | Featherweight |
| Hunter Smith | 8-2 | Lightweight |
| Hu Yaozong | 4-3 | Heavyweight |
| Hyder Amil | 11-4 | Featherweight |
| Hyun Gyu Lim | 12-7 | Welterweight |
| HyunSung Park | 10-2 | Flyweight |
| Ian Entwistle | 9-3 | Bantamweight |
| Ian Escuza | 8-0 | Featherweight |
| Ian Freeman | 20-7-1 | Heavyweight |
| Ian Heinisch | 15-5 | Middleweight |
| Ian Loveland | 16-10 | Bantamweight |
| Ian Machado Garry | 17-2-0 | Welterweight |
| Ian McCall | 13-7-1 | Flyweight |
| Iasmin Lucindo | 19-6 | Women's Strawweight |
| Ibo Aslan | 14-4 | Light Heavyweight |
| Icho Larenas | 1-2 | Heavyweight |
| Ignacio Bahamondes | 18-7 | Lightweight |
| Igor Araujo | 25-9 | Welterweight |
| Igor Cavalcanti | 14-2 | Middleweight |
| Igor Pokrajac | 25-14 | Light Heavyweight |
| Igor Severino | 9-1 | Flyweight |
| Igor Zinoviev | 0-1 | Middleweight |
| Ihor Potieria | 20-8 | Middleweight |
| Ike Villanueva | 18-14 | Heavyweight |
| Ikram Aliskerov | 18-2-0 | Middleweight |
| Ikuhisa Minowa | 23-20 | Middleweight |
| Ildemar Alcantara | 22-14 | Middleweight |
| Iliarde Santos | 28-13 | Flyweight |
| Ilias Bulaid | 9-1-1 | Featherweight |
| Ilia Topuria | 17-1 | Lightweight |
| Ilimbek Akylbek | 1-0 | — |
| Ilimbek Akylbek Uulu | 10-3-0 | Bantamweight |
| Ilir Latifi | 17-9 | Heavyweight |
| Imanol Rodriguez | 8-1 | Flyweight |
| Impa Kasanganay | 20-7 | Middleweight |
| Ion Cutelaba | 20-12-1 | Light Heavyweight |
| Irene Aldana | 15-8 | Women's Bantamweight |
| Irina Alekseeva | 5-5 | Women's Bantamweight |
| Irwin Rivera | 11-6 | Featherweight |
| Isaac Dulgarian | 7-2 | Featherweight |
| Isaac Moreno | 9-0 | Welterweight |
| Isaac Thomson | 9-3 | Featherweight |
| Isaac Vallie-Flagg | 16-7 | Lightweight |
| Isabela de Padua | 5-3 | Women's Flyweight |
| Islam Dulatov | 12-1-0 | Welterweight |
| Islam Makhachev | 29-1 | Welterweight |
| Ismael Bonfim | 20-9 | Lightweight |
| Ismail Naurdiev | 26-8 | Middleweight |
| Israel Adesanya | 24-6-0 | Middleweight |
| Issei Tamura | 12-8 | Bantamweight |
| Istela Nunes | 6-6-1 | Women's Strawweight |
| Iuri Alcantara | 35-11 | Bantamweight |
| Ivana Petrovic | 7-3 | Women's Flyweight |
| Ivan Erslan | 15-6-1 | Light Heavyweight |
| Ivan Gnizditskiy | 7-0-0 | Light Heavyweight |
| Ivan Jorge | 26-7 | Lightweight |
| Ivan Menjivar | 25-12 | Featherweight |
| Ivan Salaverry | 14-9 | Middleweight |
| Ivan Serati | 0-3 | Light Heavyweight |
| Iwo Baraniewski | 9-1 | Light Heavyweight |
| Izabela Badurek | 5-6 | Women's Strawweight |
| Jacare Souza | 26-10 | Middleweight |
| Jack Della Maddalena | 19-4 | Welterweight |
| Jack Hermansson | 25-10 | Welterweight |
| Jackie Lee | 0-1 | Lightweight |
| Jack Jenkins | 14-5 | Featherweight |
| Jack Marshman | 23-11 | Middleweight |
| Jack May | 11-8 | Heavyweight |
| Jack McGlaughlin | 0-1 | Open Weight |
| Jack Nilson | 1-1 | Lightweight |
| Jack Shore | 17-3 | Featherweight |
| Jackson McVey | 8-2 | Middleweight |
| Jacobe Smith | 14-0 | Welterweight |
| Jacob Kilburn | 8-7 | Featherweight |
| Jacob Malkoun | 10-4 | Middleweight |
| Jacob Volkmann | 19-7 | Lightweight |
| Jacqueline Cavalcanti | 10-2 | Women's Bantamweight |
| Jaden Ortega | 6-1 | Welterweight |
| Jafel Filho | 17-5-0 | Flyweight |
| Jai Herbert | 15-7-1 | Lightweight |
| Jailton Almeida | 22-5 | Heavyweight |
| Jairzinho Rozenstruik | 15-6 | Heavyweight |
| Jake Collier | 14-11 | Light Heavyweight |
| Jake Ellenberger | 31-15 | Welterweight |
| Jake Hadley | 12-6 | Bantamweight |
| Jake Hecht | 4-3 | Welterweight |
| Jake Lindsey | 12-9 | Lightweight |
| Jake Matthews | 23-8-0 | Welterweight |
| Jake O'Brien | 13-4 | Catch Weight |
| Jake Rosholt | 12-5 | Light Heavyweight |
| Jake Shields | 33-11 | Welterweight |
| Jakub Wiklacz | 18-3-2 | Bantamweight |
| Jalin Turner | 16-9 | Lightweight |
| Jamahal Hill | 12-4 | Light Heavyweight |
| Jamall Emmers | 23-8 | Featherweight |
| Jamal Pogues | 11-5 | Heavyweight |
| James Bochnovic | 7-4 | Light Heavyweight |
| James Giboo | 0-3 | Welterweight |
| James Hammortree | 0-2 | Middleweight |
| James Head | 9-4 | Welterweight |
| James Irvin | 17-10 | Light Heavyweight |
| James Krause | 28-9 | Welterweight |
| James Lee | 3-2 | Light Heavyweight |
| James Llontop | 14-5 | Lightweight |
| James McSweeney | 15-18 | Heavyweight |
| James Moontasri | 8-5 | Lightweight |
| James Mulheron | 11-4 | Heavyweight |
| James Te Huna | 16-9 | Middleweight |
| James Toney | 0-1 | Heavyweight |
| James Vick | 15-6 | Welterweight |
| James Wilks | 2-2 | Welterweight |
| James Zikic | 3-6 | Light Heavyweight |
| Jamey-Lyn Horth | 9-3 | Women's Flyweight |
| Jamey Simmons | 7-4 | Featherweight |
| Jamie Moyle | 4-4 | Women's Strawweight |
| Jamie Mullarkey | 18-9 | Lightweight |
| Jamie Pickett | 13-11 | Middleweight |
| Jamie Siraj | 14-4 | Bantamweight |
| Jamie Varner | 21-11 | Lightweight |
| Jamie Yager | 8-4 | Welterweight |
| Jan Blachowicz | 29-12-2 | Light Heavyweight |
| Jaqueline Amorim | 11-2 | Women's Strawweight |
| Jared Cannonier | 18-10-0 | Middleweight |
| Jared Gooden | 23-12 | Middleweight |
| Jared Gordon | 21-9-0 | Lightweight |
| Jared Hamman | 14-6 | Middleweight |
| Jared Papazian | 20-13 | Flyweight |
| Jared Rollins | 0-1 | Welterweight |
| Jared Rosholt | 21-8 | Heavyweight |
| Jared Vanderaa | 17-12 | Heavyweight |
| Jarjis Danho | 7-1-1 | Heavyweight |
| Jarno Errens | 14-6 | Featherweight |
| Jarred Brooks | 22-5 | Flyweight |
| Jasmine Jasudavicius | 17-5 | Women's Flyweight |
| Jason Asher | 5-1 | Lightweight |
| Jason Black | 5-3 | Lightweight |
| Jason Brilz | 22-6 | Light Heavyweight |
| Jason Day | 4-8 | Middleweight |
| Jason DeLucia | 3-2 | Middleweight |
| Jason Dent | 1-8 | Lightweight |
| Jason Fairn | 0-1 | Open Weight |
| Jason Gilliam | 0-5 | Welterweight |
| Jason Godsey | 1-5 | Heavyweight |
| Jason Gonzalez | 11-5 | Lightweight |
| Jason High | 22-8 | Lightweight |
| Jason Knight | 23-8 | Featherweight |
| Jason Lambert | 6-11 | Middleweight |
| Jason MacDonald | 25-16 | Middleweight |
| Jason Miller | 0-4 | Heavyweight |
| Jason Novelli | 11-4 | Lightweight |
| Jason Reinhardt | 20-4 | Bantamweight |
| Jason Saggo | 13-4 | Lightweight |
| Jason Tan | 0-3 | Welterweight |
| Jason Thacker | 0-1 | Middleweight |
| Jason Von Flue | 2-6 | Welterweight |
| Jason Witt | 19-9 | Welterweight |
| Jason Young | 9-6 | Featherweight |
| Javad Mahjoub | 5-1 | Heavyweight |
| Javid Basharat | 15-2 | Bantamweight |
| Javier Reyes | 23-6 | Featherweight |
| Javier Vazquez | 16-5 | Featherweight |
| Jay Cucciniello | 8-2 | Featherweight |
| Jay Hieron | 23-7 | Welterweight |
| Jay Perrin | 12-8 | Bantamweight |
| Jay Silva | 0-2 | Middleweight |
| JC Cottrell | 17-5 | Lightweight |
| Jean Matsumoto | 18-2 | Bantamweight |
| Jean-Paul Lebosnoyani | 12-2 | Welterweight |
| Jean Silva | 7-3 | Welterweight |
| Jeff Cox | 0-4 | Lightweight |
| Jeff Curran | 36-18 | Bantamweight |
| Jefferson Nascimento | 0-2 | — |
| Jeff Hougland | 10-6 | Bantamweight |
| Jeff Hughes | 10-4 | Heavyweight |
| Jeff Joslin | 0-2 | Welterweight |
| Jeff Molina | 11-2 | Flyweight |
| Jeff Monson | 50-22 | Heavyweight |
| Jeff Newton | 0-1 | Light Heavyweight |
| Jeisla Chaves | 8-1 | Women's Flyweight |
| Jeka Saragih | 14-5 | Featherweight |
| Jenel Lausa | 7-6 | Flyweight |
| Jennifer Maia | 23-10 | Women's Flyweight |
| Jens Pulver | 27-19-1 | Bantamweight |
| JeongYeong Lee | 11-4 | Featherweight |
| Jeremiah Wells | 14-4-1 | Welterweight |
| Jeremy Horn | 90-21 | Middleweight |
| Jeremy Jackson | 2-5 | Welterweight |
| Jeremy Kennedy | 20-7 | Featherweight |
| Jeremy Kimball | 15-10 | Middleweight |
| Jeremy Larsen | 8-5 | Featherweight |
| Jeremy Stephens | 29-23 | Lightweight |
| Jermaine Andre | 2-1 | Middleweight |
| Jerome Rivera | 10-6 | Flyweight |
| Jerrod Sanders | 16-3 | Bantamweight |
| Jerry Bohlander | 5-3 | Middleweight |
| Jessamyn Duke | 3-5 | Women's Bantamweight |
| Jesse Bongfeldt | 16-5-1 | Middleweight |
| Jesse Butler | 12-6 | Bantamweight |
| Jesse Forbes | 15-5 | Middleweight |
| Jesse Lennox | 2-3 | Welterweight |
| Jesse Ronson | 23-13 | Welterweight |
| Jesse Sanders | 0-1 | Welterweight |
| Jesse Strader | 7-4 | Bantamweight |
| Jesse Taylor | 34-17 | Middleweight |
| Jessica Aguilar | 20-10 | Women's Strawweight |
| Jessica Andrade | 26-15 | Women's Strawweight |
| Jessica Eye | 15-11 | Women's Flyweight |
| Jessica Penne | 14-9 | Women's Strawweight |
| Jessica Rakoczy | 2-5 | Women's Strawweight |
| Jessica-Rose Clark | 11-9 | Women's Bantamweight |
| Jessie Rosas | 8-2 | Featherweight |
| Jessin Ayari | 17-6 | Lightweight |
| Jess Liaudin | 3-5 | Welterweight |
| Jesus Aguilar | 13-4 | Flyweight |
| Jesus Pinedo | 26-8 | Featherweight |
| Jhonata Diniz | 9-3 | Heavyweight |
| Jianping Yang | 6-4 | Featherweight |
| Jim Alers | 13-3 | Featherweight |
| Jimi Manuwa | 17-6 | Light Heavyweight |
| Jimmie Rivera | 23-5 | Featherweight |
| Jim Miller | 39-19-0 | Lightweight |
| Jim Mullen | 0-1 | Heavyweight |
| Jimmy Crute | 14-4-2 | Light Heavyweight |
| Jimmy Flick | 17-9 | Flyweight |
| Jimmy Quinlan | 3-1 | Middleweight |
| Jim Wallhead | 0-2 | Welterweight |
| Jimy Hettes | 11-3 | Featherweight |
| Jinh Yu Frey | 11-10 | Women's Strawweight |
| Jiniushiyue | 13-4-0 | Flyweight |
| Jin Soo Son | 9-4 | Bantamweight |
| Jiri Prochazka | 32-6-1 | Light Heavyweight |
| Ji Yeon Kim | 9-7 | Women's Flyweight |
| JJ Aldrich | 16-9 | Women's Flyweight |
| Joachim Christensen | 14-8 | Light Heavyweight |
| Joanderson Brito | 20-5-1 | Featherweight |
| Joanna Jedrzejczyk | 16-5 | Women's Strawweight |
| Joanne Wood | 18-8 | Women's Flyweight |
| Joao Pierini | 0-1 | Lightweight |
| Joao Roque | 1-1 | Featherweight |
| Joao Zeferino | 26-9 | Welterweight |
| Joaquim Silva | 15-6 | Lightweight |
| Joaquin Buckley | 21-9 | Welterweight |
| Joby Sanchez | 13-6 | Flyweight |
| Jocelyn Jones-Lybarger | 6-4 | Women's Strawweight |
| Jodie Esquibel | 6-7 | Women's Strawweight |
| Joe Brammer | 7-3 | Lightweight |
| Joe Charles | 2-3 | Heavyweight |
| Joe Doerksen | 14-13 | Light Heavyweight |
| Joe Duffy | 16-5 | Lightweight |
| Joe Ellenberger | 15-2 | Lightweight |
| Joe Giannetti | 15-7 | Lightweight |
| Joe Jordan | 1-8 | Lightweight |
| Joe Kropschot | 10-3 | Middleweight |
| Joel Alvarez | 23-5 | Welterweight |
| Joe Lauzon | 28-16 | Lightweight |
| Joel Faglier | 7-0 | Heavyweight |
| Joel Sutton | 2-0 | Open Weight |
| Joe Merritt | 6-2 | Welterweight |
| Joe Moreira | 1-1 | Lightweight |
| Joe Pardo | 0-3 | Heavyweight |
| Joe Proctor | 11-6 | Lightweight |
| Joe Pyfer | 16-3-0 | Middleweight |
| Joe Riggs | 47-18 | Middleweight |
| Joe Slick | 2-2 | Heavyweight |
| Joe Solecki | 12-6-1 | Lightweight |
| Joe Son | 6-1 | Middleweight |
| Joe Soto | 18-7 | Bantamweight |
| Joe Stevenson | 33-16 | Lightweight |
| Joe Vedepo | 18-9 | Middleweight |
| Joe Veres | 0-2 | Lightweight |
| Joey Beltran | 17-15 | Middleweight |
| Joey Gambino | 9-2 | Featherweight |
| Joey Gilbert | 2-1 | Lightweight |
| Joey Gomez | 6-2 | Bantamweight |
| Joey Roberts | 0-1 | Heavyweight |
| John Albert | 7-5 | Bantamweight |
| John Alessio | 33-17 | Lightweight |
| John Allan | 13-8 | Light Heavyweight |
| John Campetella | 0-1 | Open Weight |
| John Castaneda | 21-9-1 | Bantamweight |
| John Cholish | 8-3 | Lightweight |
| John Cofer | 6-3 | Lightweight |
| John Dodson | 25-14 | Bantamweight |
| John Dowdy | 0-1 | Open Weight |
| John Garza | 6-2 | Bantamweight |
| John Gunderson | 35-16 | Lightweight |
| John Gunther | 7-2 | Lightweight |
| John Halverson | 0-2 | Lightweight |
| John Hathaway | 18-3 | Welterweight |
| John Howard | 29-19 | Welterweight |
| John Kolosci | 1-4 | Welterweight |
| John Lewis | 1-2 | Lightweight |
| John Lineker | 38-11 | Bantamweight |
| John Lober | 0-1 | Middleweight |
| John Maguire | 26-12 | Lightweight |
| John Makdessi | 18-9 | Lightweight |
| John Marsh | 0-2 | Heavyweight |
| John Matua | 0-1 | Heavyweight |
| John Moraga | 19-7 | Flyweight |
| Johnny Bedford | 23-14 | Bantamweight |
| Johnny Case | 28-10 | Lightweight |
| Johnny Eduardo | 28-13 | Bantamweight |
| Johnny Munoz | 12-4 | Featherweight |
| Johnny Rees | 0-4 | Welterweight |
| Johnny Rhodes | 2-2 | Open Weight |
| Johnny Walker | 24-10 | Heavyweight |
| John Phillips | 22-11 | Middleweight |
| John Polakowski | 1-1 | Lightweight |
| John Salter | 19-6 | Middleweight |
| John Teixeira | 23-6 | Featherweight |
| John Yannis | 10-5 | Bantamweight |
| Johny Hendricks | 18-8 | Middleweight |
| Jonathan Brookins | 17-10 | Featherweight |
| Jonathan Goulet | 7-6 | Welterweight |
| Jonathan Martinez | 20-6 | Bantamweight |
| Jonathan Meunier | 8-2 | Welterweight |
| Jonathan Micallef | 10-1 | Welterweight |
| Jonathan Pearce | 14-7 | Featherweight |
| Jonathan Wiezorek | 2-2 | Super Heavyweight |
| Jonathan Wilson | 9-4 | Middleweight |
| Jonavin Webb | 11-4 | Welterweight |
| Jon Delos Reyes | 8-5 | Flyweight |
| Jon Fitch | 29-8-1 | Welterweight |
| Jon Hess | 1-1 | Middleweight |
| Jon Jones | 28-1 | Heavyweight |
| Jon Kunneman | 10-1 | — |
| Jon Madsen | 8-2 | Heavyweight |
| Jon Manley | 10-5 | Catch Weight |
| Jonny Parsons | 9-4 | Welterweight |
| Jon Olav Einemo | 0-2 | Heavyweight |
| Jon Tuck | 11-5 | Lightweight |
| JooSang Yoo | 9-2-0 | Featherweight |
| Jordan Espinosa | 15-10 | Flyweight |
| Jordan Griffin | 18-10 | Featherweight |
| Jordan Johnson | 4-0 | Light Heavyweight |
| Jordan Leavitt | 13-4 | Featherweight |
| Jordan Mein | 31-14 | Welterweight |
| Jordan Radev | 5-3 | Welterweight |
| Jordan Rinaldi | 15-7 | Lightweight |
| Jordan Vucenic | 13-4 | Lightweight |
| Jordan Williams | 9-6 | Middleweight |
| Jordan Wright | 13-5 | Middleweight |
| Jorge de Oliveira | 7-3 | Welterweight |
| Jorge Gurgel | 14-10 | Lightweight |
| Jorge Lopez | 0-2 | Welterweight |
| Jorge Masvidal | 35-17 | Welterweight |
| Jorge Patino | 38-19 | Welterweight |
| Jorge Rivera | 20-9 | Middleweight |
| Jorge Santiago | 25-12 | Welterweight |
| Jose Aldo | 32-10 | Featherweight |
| Jose Daniel Medina | 0-5 | Middleweight |
| Jose Delano | 18-4 | Featherweight |
| Jose Delgado | 12-3 | Featherweight |
| Josefine Knutsson | 3-1 | Women's Strawweight |
| Jose Johnson | 16-10 | Flyweight |
| Joselyne Edwards | 18-6 | Women's Bantamweight |
| Jose Maria | 0-2 | Flyweight |
| Jose Montanha | 7-1 | Heavyweight |
| Jose Ochoa | 9-2-1 | Flyweight |
| Joseph Benavidez | 28-8 | Flyweight |
| Joseph Gigliotti | 0-2 | Middleweight |
| Joseph Holmes | 1-3 | Middleweight |
| Joseph Morales | 16-3 | Flyweight |
| Joseph Sandoval | 7-7 | Bantamweight |
| Jose Quinonez | 10-6 | Bantamweight |
| Jose Souza | 2-0 | — |
| Jose Torres | 1-1 | Flyweight |
| Josh Barnett | 7-3 | Heavyweight |
| Josh Bryant | 0-1 | Middleweight |
| Josh Clopton | 6-2 | Featherweight |
| Josh Copeland | 0-2 | Heavyweight |
| Josh Culibao | 11-4-1 | Featherweight |
| Josh Emmett | 19-7 | Featherweight |
| Josh Ferguson | 0-2 | Flyweight |
| Josh Fremd | 2-5 | Middleweight |
| Josh Grispi | 0-4 | Featherweight |
| Josh Haynes | 0-3 | Welterweight |
| Josh Hendricks | 4-5 | Heavyweight |
| Josh Hokit | 10-0-0 | Heavyweight |
| Josh Koscheck | 17-12 | Welterweight |
| Josh Neer | 36-16 | Welterweight |
| Josh Parisian | 2-5 | Heavyweight |
| Josh Quinlan | 1-3 | Welterweight |
| Josh Rafferty | 0-1 | Welterweight |
| Josh Samman | 11-5 | Middleweight |
| Josh Sampo | 11-7 | Flyweight |
| Josh Shockley | 0-2 | Lightweight |
| Josh Shockman | 0-1 | Heavyweight |
| Josh Stansbury | 8-6 | Light Heavyweight |
| Josh Stuart | 0-1 | Welterweight |
| Josh Thomson | 22-9 | Lightweight |
| Joshua Burkman | 28-18 | Welterweight |
| Joshua Van | 18-2-0 | Flyweight |
| Joshua Weems | 11-6 | Bantamweight |
| Josiah Harrell | 11-2 | Lightweight |
| Josiane Nunes | 10-4 | Women's Bantamweight |
| Josias Musasa | 0-2 | Bantamweight |
| Journey Newson | 1-4 | Bantamweight |
| Jovan Leka | 1-0 | Heavyweight |
| JP Buys | 9-6 | Flyweight |
| Juan Adams | 1-3 | Heavyweight |
| Juancamilo Ronderos | 4-2 | Flyweight |
| Juan Diaz | 16-1-1 | Bantamweight |
| Juan Espino | 2-1 | Heavyweight |
| Juan Manuel Puig | 0-2 | Featherweight |
| Jules Bruchez | 0-1 | Light Heavyweight |
| Julia Avila | 3-3 | Bantamweight |
| Juliana Lima | 10-7 | Women's Strawweight |
| Juliana Miller | 6-4 | Women's Flyweight |
| Julian Erosa | 32-14 | Featherweight |
| Julian Marquez | 3-5 | Middleweight |
| Julianna Pena | 13-6 | Women's Bantamweight |
| Julian Sanchez | 0-1 | Heavyweight |
| Julia Polastri | 15-6 | Women's Strawweight |
| Julie Kedzie | 0-2 | Bantamweight |
| Julien Leblanc | 10-4 | Middleweight |
| Julija Stoliarenko | 2-7 | Flyweight |
| Julio Arce | 22-7 | Featherweight |
| Julio Paulino | 0-2 | Welterweight |
| Julius Walker | 9-4 | Light Heavyweight |
| Jumabieke Tuerxun | 0-3 | Bantamweight |
| Junie Browning | 4-5 | Lightweight |
| Junior Albini | 15-6 | Heavyweight |
| Junior Assuncao | 2-3 | Featherweight |
| Junior Dos Santos | 21-11 | Heavyweight |
| Junior Tafa | 7-6-0 | Light Heavyweight |
| JunYong Park | 19-7-0 | Middleweight |
| Jussier Formiga | 25-8 | Flyweight |
| Justin Buchholz | 1-4 | Lightweight |
| Justin Edwards | 2-5 | Lightweight |
| Justin Eilers | 1-3 | Heavyweight |
| Justine Kish | 9-6 | Women's Flyweight |
| Justin Frazier | 8-4 | Heavyweight |
| Justin Gaethje | 28-5 | Lightweight |
| Justin James | 0-1 | Lightweight |
| Justin Jaynes | 1-4 | Featherweight |
| Justin Jones | 0-2 | Middleweight |
| Justin Lawrence | 1-2 | Featherweight |
| Justin Ledet | 9-4 | Light Heavyweight |
| Justin Levens | 0-2 | Middleweight |
| Justin Martin | 1-0 | Middleweight |
| Justin McCully | 2-2 | Heavyweight |
| Justin Salas | 3-4 | Lightweight |
| Justin Scoggins | 14-8 | Flyweight |
| Justin Tafa | 7-5 | Heavyweight |
| Justin Willis | 4-1 | Heavyweight |
| Justin Wren | 0-1 | Heavyweight |
| Jutaro Nakao | 2-5 | Welterweight |
| Kaan Ofli | 15-4-1 | Featherweight |
| Kai Asakura | 23-6 | Bantamweight |
| Kai Kamaka III | 18-9-1 | Featherweight |
| Kai Kara-France | 25-12-1 | Flyweight |
| Kaik Brito | 20-6 | — |
| Kailin Curran | 6-8 | Women's Strawweight |
| Kajan Johnson | 24-14 | Lightweight |
| Kalib Starnes | 15-11 | Middleweight |
| Kalindra Faria | 19-9 | Women's Flyweight |
| Kamal Shalorus | 9-5 | Lightweight |
| Kamaru Usman | 21-5 | Middleweight |
| Kamuela Kirk | 12-7 | Featherweight |
| Kanako Murata | 12-3 | Women's Strawweight |
| Karine Gevorgyan | 2-4 | Women's Flyweight |
| Karine Silva | 21-8 | Women's Flyweight |
| Karlos Vemola | 13-6 | Middleweight |
| Karl Roberson | 9-6 | Middleweight |
| Karl Williams | 3-1 | Heavyweight |
| Karolina Kowalkiewicz | 16-10 | Women's Strawweight |
| Karol Rosa | 19-8 | Women's Bantamweight |
| Karo Parisyan | 8-4 | Welterweight |
| Katlyn Cerminara | 20-7 | Women's Flyweight |
| Katsuhisa Fujii | 2-3 | Heavyweight |
| Katsunori Kikuno | 22-8 | Featherweight |
| Kaue Fernandes | 11-3 | Lightweight |
| Kay Hansen | 8-6 | Women's Strawweight |
| Kayla Harrison | 19-1-0 | Women's Bantamweight |
| Kaynan Kruschewsky | 15-3 | Lightweight |
| Kazuhiro Nakamura | 19-12 | Light Heavyweight |
| Kazuki Tokudome | 20-12 | Lightweight |
| Kazula Vargas | 12-5 | Lightweight |
| Kazushi Sakuraba | 26-17 | Catch Weight |
| KB Bhullar | 0-2 | Middleweight |
| Keigo Kunihara | 0-1 | Heavyweight |
| Keiichiro Nakamura | 8-2 | Featherweight |
| Keiichiro Yamamiya | 7-5 | Middleweight |
| Keita Nakamura | 35-12 | Welterweight |
| Keith Berish | 0-1 | Light Heavyweight |
| Keith Hackney | 2-2 | Open Weight |
| Keith Jardine | 17-11 | Middleweight |
| Keith Mielke | 0-2 | Middleweight |
| Keith Rockel | 1-2 | Middleweight |
| Keith Wisniewski | 0-4 | Welterweight |
| Kelly Dullanty | 1-1 | Lightweight |
| Kelly Faszholz | 4-2 | Women's Bantamweight |
| Kelvin Gastelum | 23-11 | Middleweight |
| Kendall Grove | 24-19 | Middleweight |
| Kenichi Yamamoto | 2-4 | Welterweight |
| Kennedy Nzechukwu | 14-7-1 | Heavyweight |
| Kenny Florian | 14-6 | Featherweight |
| Kenny Robertson | 15-7 | Welterweight |
| Ken Shamrock | 28-17-2 | Heavyweight |
| Ken Stone | 11-4 | Bantamweight |
| Kerry Schall | 0-1 | Heavyweight |
| Ketlen Souza | 17-7 | Women's Strawweight |
| Ketlen Vieira | 16-5 | Women's Bantamweight |
| Kevin Aguilar | 17-5 | Featherweight |
| Kevin Borjas | 11-6 | Flyweight |
| Kevin Burns | 3-4 | Welterweight |
| Kevin Casey | 9-6-1 | Middleweight |
| Kevin Christian | 9-4 | Light Heavyweight |
| Kevin Croom | 21-15 | Lightweight |
| Kevin Ferguson | 5-2 | Heavyweight |
| Kevin Holland | 29-15-0 | Welterweight |
| Kevin Jackson | 2-2 | Middleweight |
| Kevin Jordan | 0-6 | Heavyweight |
| Kevin Jousset | 10-5 | Welterweight |
| Kevin Lee | 20-9 | Welterweight |
| Kevin Natividad | 9-4 | Featherweight |
| Kevin Randleman | 17-16 | Light Heavyweight |
| Kevin Rosier | 1-4 | Heavyweight |
| Kevin Vallejos | 18-1-0 | Featherweight |
| Khabib Nurmagomedov | 29-0 | Lightweight |
| Khadis Ibragimov | 14-4 | Light Heavyweight |
| Khalid Murtazaliev | 17-4 | Middleweight |
| Khalid Taha | 13-5 | Featherweight |
| Khalil Rountree Jr. | 15-7 | Light Heavyweight |
| Khama Worthy | 19-10 | Lightweight |
| Khamzat Chimaev | 15-1 | Middleweight |
| Khaos Williams | 16-6 | Welterweight |
| Khusein Askhabov | 23-1 | Featherweight |
| Kiefer Crosbie | 10-6 | Welterweight |
| Kiichi Kunimoto | 21-11 | Welterweight |
| Kimo Leopoldo | 4-6 | Open Weight |
| King Green | 38-21-1 | Lightweight |
| Kiru Sahota | 12-3 | Flyweight |
| Kit Cope | 0-6 | Welterweight |
| KJ Noons | 13-9 | Lightweight |
| Klaudia Sygula | 8-3 | Women's Bantamweight |
| Kleydson Rodrigues | 8-4 | Bantamweight |
| Klidson Abreu | 16-5 | Light Heavyweight |
| Kody Steele | 9-1 | Lightweight |
| Koji Kitao | 1-1 | Open Weight |
| Koji Oishi | 25-10 | Featherweight |
| Konstantin Erokhin | 9-4 | Heavyweight |
| Kris McCray | 8-5 | Middleweight |
| Kris Moutinho | 14-8 | Bantamweight |
| Kristian Rothaermel | 0-1 | Light Heavyweight |
| Kristof Midoux | 0-3 | Heavyweight |
| Kron Gracie | 5-3 | Featherweight |
| Krzysztof Jotko | 25-6 | Middleweight |
| Krzysztof Soszynski | 26-12 | Light Heavyweight |
| Kuniyoshi Hironaka | 1-3 | Welterweight |
| Kurt Holobaugh | 22-10-1 | Lightweight |
| Kurtis Campbell | 9-1 | Featherweight |
| Kurt Pellegrino | 16-7 | Lightweight |
| Kwan Ho Kwak | 9-2 | Bantamweight |
| Kwon Won Il | 14-7 | Bantamweight |
| Kyle Bochniak | 11-7 | Featherweight |
| Kyle Bradley | 18-11 | Lightweight |
| Kyle Daukaus | 16-7-1 | Middleweight |
| Kyle Kingsbury | 11-6 | Light Heavyweight |
| Kyle Nelson | 19-8-1 | Lightweight |
| Kyle Noke | 22-10 | Welterweight |
| Kyle Prepolec | 18-11 | Lightweight |
| Kyler Phillips | 12-5 | Bantamweight |
| Kyle Stewart | 15-6 | Welterweight |
| Kyle Watson | 13-9 | Lightweight |
| Kyoji Horiguchi | 36-6-0 | Flyweight |
| Kyung Ho Kang | 20-11 | Bantamweight |
| Lance Benoist | 7-2 | Welterweight |
| Lance Gibson | 1-2 | Middleweight |
| Lance Gibson Jr. | 10-2 | Lightweight |
| Landon Quinones | 0-2 | Lightweight |
| Lando Vannata | 12-8-2 | Lightweight |
| Lara Procopio | 7-2 | Women's Bantamweight |
| Larissa Pacheco | 23-5 | Women's Bantamweight |
| Larry Cureton | 0-2 | Open Weight |
| Laureano Staropoli | 13-7 | Welterweight |
| Lauren Mueller | 5-4 | Women's Flyweight |
| Lauren Murphy | 16-7 | Women's Flyweight |
| Lavar Johnson | 18-10 | Heavyweight |
| Laverne Clark | 7-8 | Welterweight |
| Lawrence Lui | 1-1 | Bantamweight |
| Leah Letson | 5-3 | Women's Featherweight |
| Leandro Issa | 17-9 | Bantamweight |
| Leandro Silva | 3-4 | Lightweight |
| Lee Murray | 1-0 | Middleweight |
| Leigh Remedios | 0-3 | Featherweight |
| Leo Kuntz | 17-4 | Lightweight |
| Leonard Garcia | 18-13 | Featherweight |
| Leonardo Guimaraes | 11-8 | Middleweight |
| Leonardo Mafra | 2-5 | Catchweight |
| Leonardo Morales | 5-6 | Bantamweight |
| Leonardo Santos | 18-7-1 | Lightweight |
| Leon Edwards | 22-6 | Welterweight |
| Leon Shahbazyan | 12-6 | Welterweight |
| Lerone Murphy | 17-1-1 | Featherweight |
| Lerryan Douglas | 14-6 | Featherweight |
| Leslie Smith | 12-10 | Women's Bantamweight |
| Levan Chokheli | 15-3-0 | Welterweight |
| Levan Makashvili | 16-2-1 | Featherweight |
| Levi Rodrigues Jr. | 5-2-1 | Light Heavyweight |
| Lewis Gonzalez | 11-4 | Welterweight |
| Liam McCracken | 8-2 | Lightweight |
| Liana Jojua | 8-6 | Women's Bantamweight |
| Liang Na | 19-8 | Women's Strawweight |
| Li Jingliang | 19-9 | Welterweight |
| Liliya Shakirova | 8-2 | Women's Flyweight |
| Lina Lansberg | 10-9 | Women's Bantamweight |
| Lisa Ellis | 15-11 | Women's Strawweight |
| Liu Ce | 1-0 | — |
| Liudvik Sholinian | 9-4 | Bantamweight |
| Livinha Souza | 14-4 | Women's Strawweight |
| Liz Carmouche | 26-8 | Women's Flyweight |
| Loai Abushaar | 7-2 | Lightweight |
| Lodune Sincaid | 1-4 | Light Heavyweight |
| Logan Clark | 3-3 | Middleweight |
| Logan Paxton | 10-2 | — |
| Loik Radzhabov | 18-6 | Lightweight |
| Loma Lookboonmee | 11-5 | Women's Strawweight |
| Lone'er Kavanagh | 11-2 | Flyweight |
| Loopy Godinez | 16-6 | Women's Strawweight |
| Lorenz Larkin | 5-5 | Welterweight |
| Losene Keita | 17-3 | Featherweight |
| Louie Sutherland | 11-8 | Heavyweight |
| Louis Cosce | 7-3 | Welterweight |
| Louis Gaudinot | 8-5 | Bantamweight |
| Louis Jourdain | 9-4 | Bantamweight |
| Louis Smolka | 18-9 | Bantamweight |
| Lowell Anderson | 0-1 | Middleweight |
| Luana Carolina | 11-6 | Women's Bantamweight |
| Luana Pinheiro | 11-5 | Women's Strawweight |
| Luana Santos | 7-2 | Women's Bantamweight |
| Luan Chagas | 16-3-1 | Welterweight |
| Luan Lacerda | 13-4 | Bantamweight |
| Luca Borando | 9-2 | Featherweight |
| Lucas Alexander | 8-5 | Featherweight |
| Lucas Almeida | 15-6 | Featherweight |
| Lucas Armand | 6-1 | Heavyweight |
| Lucas Brennan | 11-3 | Featherweight |
| Lucas Fernando | 15-3 | Light Heavyweight |
| Lucas Martins | 17-5 | Featherweight |
| Lucas Rocha | 18-2 | Flyweight |
| Lucia Szabova | 13-0 | Women's Flyweight |
| Lucie Pudilova | 15-11 | Women's Flyweight |
| Lucio Linhares | 4-7 | Welterweight |
| Ludovit Klein | 24-6-1 | Lightweight |
| Luigi Fioravanti | 26-15 | Welterweight |
| Luigi Vendramini | 9-3 | Welterweight |
| Luis Felipe Dias | 19-6 | Middleweight |
| Luis Francischinelli | 7-1 | Welterweight |
| Luis Gurule | 11-4-0 | Flyweight |
| Luis Henrique | 2-4 | Heavyweight |
| Luis Hernandez | 9-0 | Middleweight |
| Luis Pajuelo | 8-2 | Featherweight |
| Luis Pena | 5-3 | Lightweight |
| Luis Ramos | 19-11 | Welterweight |
| Luis Saldana | 16-7-1 | Featherweight |
| Luiz Cane | 13-5 | Middleweight |
| Luiz Dutra | 11-5 | Welterweight |
| Lukasz Brzeski | 9-7-2 | Heavyweight |
| Lukasz Sajewski | 12-4 | Lightweight |
| Luke Barnatt | 15-8 | Middleweight |
| Luke Caudillo | 2-7 | Lightweight |
| Luke Cummo | 6-6 | Welterweight |
| Luke Fernandez | 6-1 | Light Heavyweight |
| Luke Jumeau | 13-5 | Welterweight |
| Luke Riley | 15-0 | Featherweight |
| Luke Rockhold | 16-6 | Middleweight |
| Luke Sanders | 13-5 | Bantamweight |
| Luke Zachrich | 14-4 | Middleweight |
| Lyman Good | 21-6 | Welterweight |
| Lyoto Machida | 26-12 | Middleweight |
| Mac Danzig | 21-12 | Lightweight |
| Maciej Jewtuszko | 12-4 | Welterweight |
| Mackens Semerzier | 6-4 | Featherweight |
| Mackenzie Dern | 17-5 | Women's Strawweight |
| Mackenzie Stiller | 6-2 | Women's Flyweight |
| Macy Chiasson | 11-6-0 | Women's Bantamweight |
| Mads Burnell | 20-8 | Featherweight |
| Magnus Cedenblad | 14-5 | Middleweight |
| Magomed Ankalaev | 22-2-1 | Light Heavyweight |
| Magomed Bibulatov | 14-3 | Flyweight |
| Magomed Gadzhiyasulov | 9-1 | Light Heavyweight |
| Magomed Mustafaev | 14-4 | Lightweight |
| Magomed Tuchalov | 7-0-0 | Light Heavyweight |
| Magomed Zaynukov | 9-0 | Lightweight |
| Mahamed Aly | 5-2 | — |
| Mahammadali Osmanli | 0-1 | — |
| Maheshate | 10-6 | Lightweight |
| Maia Stevenson | 6-5 | Women's Strawweight |
| Maiquel Falcao | 37-11 | Middleweight |
| Mairbek Taisumov | 27-6 | Lightweight |
| Mairon Santos | 18-1-0 | Featherweight |
| Makhmud Muradov | 25-8 | Middleweight |
| Maki Pitolo | 14-11 | Middleweight |
| Makwan Amirkhani | 17-11 | Featherweight |
| Malcolm Gordon | 14-8 | Flyweight |
| Malcolm Wellmaker | 10-3 | Bantamweight |
| Mallory Martin | 10-6 | Women's Strawweight |
| Mana Martinez | 10-5 | Bantamweight |
| Mandel Nallo | 15-4-1 | Lightweight |
| Mandy Bohm | 8-3 | Women's Flyweight |
| Manel Kape | 23-7-0 | Flyweight |
| Manny Bermudez | 15-2 | Bantamweight |
| Manoel Sousa | 15-1 | Lightweight |
| Manolo Zecchini | 11-5 | Featherweight |
| Manon Fiorot | 13-3 | Women's Flyweight |
| Mansur Abdul-Malik | 9-2-1 | Middleweight |
| Mantas Kondratavicius | 9-2 | Middleweight |
| Manuel Rodriguez | 10-6 | Welterweight |
| Manuel Torres | 17-4 | Lightweight |
| Manvel Gamburyan | 16-10 | Bantamweight |
| Mara Romero Borella | 12-9 | Women's Flyweight |
| Marc-Andre Barriault | 18-11 | Middleweight |
| Marc Diakiese | 18-8 | Lightweight |
| Marcel Fortuna | 10-4 | Light Heavyweight |
| Marcelo Aguiar | 0-2 | Welterweight |
| Marcelo Golm | 10-7 | Heavyweight |
| Marcelo Guimaraes | 9-2 | Middleweight |
| Marcelo Mello | 1-0 | Lightweight |
| Marcelo Rojo | 17-11 | Featherweight |
| Marcin Bandel | 15-6 | Lightweight |
| Marcin Held | 29-11 | Lightweight |
| Marcin Prachnio | 17-9 | Light Heavyweight |
| Marcin Tybura | 27-13 | Heavyweight |
| Marcin Wrzosek | 13-7 | Lightweight |
| Marcio Alexandre Junior | 0-3 | Middleweight |
| Marcio Barbosa | 4-0 | Featherweight |
| Marcio Cruz | 8-3 | Light Heavyweight |
| Marco Beltran | 8-7 | Flyweight |
| Marco Polo Reyes | 4-4 | Lightweight |
| Marco Ruas | 5-3 | Heavyweight |
| Marcos Degli | 15-4 | Flyweight |
| Marcos Mariano | 6-6 | Lightweight |
| Marcos Rogerio de Lima | 22-10 | Heavyweight |
| Marcos Vinicius | 1-3 | Flyweight |
| Marco Tulio | 14-3-0 | Middleweight |
| Marcus Aurelio | 24-10 | Lightweight |
| Marcus Bossett | 1-2 | Open Weight |
| Marcus Brimage | 7-7 | Bantamweight |
| Marcus Buchecha | 0-2-1 | Heavyweight |
| Marcus Davis | 22-11 | Welterweight |
| Marcus Jones | 0-1 | Heavyweight |
| Marcus LeVesseur | 22-7 | Lightweight |
| Marcus McGhee | 13-2 | Bantamweight |
| Marcus Silveira | 0-0 | Heavyweight |
| Marek Bujlo | 0-1 | Heavyweight |
| Maria Oliveira | 1-3 | Women's Strawweight |
| Marina Rodriguez | 17-6-2 | Women's Strawweight |
| Marina Spasic | 0-1 | — |
| Mario Bautista | 18-3 | Bantamweight |
| Mario Miranda | 14-7 | Middleweight |
| Mario Neto | 3-4 | Heavyweight |
| Marion Reneau | 9-8-1 | Women's Bantamweight |
| Mario Piazzon | 12-2 | — |
| Mario Pinto | 13-0-0 | Heavyweight |
| Mariya Agapova | 10-5 | Women's Flyweight |
| Mark Bocek | 13-5 | Lightweight |
| Mark Choinski | 8-1 | Lightweight |
| Mark Coleman | 16-10 | Light Heavyweight |
| Mark De La Rosa | 11-5 | Bantamweight |
| Mark Eddiva | 6-3 | Featherweight |
| Mark Godbeer | 13-5 | Heavyweight |
| Mark Hall | 4-3 | Open Weight |
| Mark Holst | 1-4 | Lightweight |
| Mark Hominick | 20-12 | Featherweight |
| Mark Hughes | 1-0 | Light Heavyweight |
| Mark Hunt | 13-14-1 | Heavyweight |
| Mark Kerr | 10-7 | Heavyweight |
| Mark Madsen | 4-2 | Lightweight |
| Mark Munoz | 14-6 | Middleweight |
| Mark Robinson | 0-0 | Heavyweight |
| Mark Scanlon | 9-2 | Welterweight |
| Mark Schultz | 1-0 | Open Weight |
| Mark Striegl | 18-5 | Bantamweight |
| Markus Perez | 12-6 | Middleweight |
| Mark Vologdin | 12-5-2 | Bantamweight |
| Mark Weir | 2-8 | Welterweight |
| Marlon Moraes | 23-13 | Bantamweight |
| Marlon Vera | 24-13-1 | Bantamweight |
| Marnic Mann | 6-4 | Women's Strawweight |
| MarQuel Mederos | 12-1-1 | Lightweight |
| Martin Bravo | 12-3 | Lightweight |
| Martin Buday | 7-1 | Heavyweight |
| Martin Day | 8-8 | Bantamweight |
| Martin Kampmann | 20-7 | Welterweight |
| Martin Kozák | 7-0 | Middleweight |
| Martin Sano | 4-3 | Welterweight |
| Martin Svensson | 15-6 | Lightweight |
| Marvin Eastman | 9-12 | Middleweight |
| Marvin Vettori | 19-12-1 | Middleweight |
| Marwan Rahiki | 9-1-0 | Featherweight |
| Maryna Moroz | 11-6 | Women's Flyweight |
| Masanori Kanehara | 28-15 | Bantamweight |
| Masio Fullen | 10-9 | Featherweight |
| Mason Jones | 18-3 | Lightweight |
| Masutatsu Yano | 0-1 | Open Weight |
| Mateus Mendonca | 10-3 | Bantamweight |
| Mateus Soares | 12-2 | Bantamweight |
| Mateusz Gamrot | 26-5-1 | Lightweight |
| Mateusz Rebecki | 5-4 | Lightweight |
| Matheus Camilo | 11-4 | Lightweight |
| Matheus Nicolau | 19-6-1 | Flyweight |
| Mats Nilsson | 0-2 | Welterweight |
| Matt Adams | 6-3 | — |
| Matt Andersen | 0-2 | Heavyweight |
| Matt Arroyo | 1-3 | Welterweight |
| Matt Bessette | 25-10 | Featherweight |
| Matt Brown | 26-19 | Welterweight |
| Matt Dwyer | 9-7 | Welterweight |
| Matt Frevola | 11-7-1 | Lightweight |
| Matt Grice | 15-5 | Featherweight |
| Matt Hamill | 12-8 | Light Heavyweight |
| Matthew Lopez | 10-4 | Bantamweight |
| Matthew Riddle | 8-3 | Welterweight |
| Matthew Semelsberger | 11-8 | Welterweight |
| Matthieu Duclos | 11-3-0 | Middleweight |
| Matt Hobar | 9-3 | Bantamweight |
| Matt Horwich | 9-15 | Middleweight |
| Matt Hughes | 45-9 | Welterweight |
| Matt Lindland | 22-9 | Middleweight |
| Matt Lucas | 1-2 | Light Heavyweight |
| Matt Mitrione | 14-9 | Heavyweight |
| Matt Sayles | 8-4 | Featherweight |
| Matt Schnell | 17-11 | Flyweight |
| Matt Serra | 11-7 | Welterweight |
| Matt Van Buren | 6-5 | Light Heavyweight |
| Matt Veach | 3-5 | Welterweight |
| Matt Wiman | 16-10 | Lightweight |
| Maurice Greene | 11-9 | Heavyweight |
| Maurice Smith | 4-3 | Heavyweight |
| Mauricio Rua | 27-14-1 | Light Heavyweight |
| Mauricio Ruffy | 15-4 | Lightweight |
| Max Gimenis | 6-2 | Heavyweight |
| Max Griffin | 20-13 | Welterweight |
| Max Holloway | 28-9 | Lightweight |
| Maxim Grishin | 32-10 | Light Heavyweight |
| Maximo Blanco | 12-8 | Featherweight |
| Max Rohskopf | 7-2 | Lightweight |
| Maycee Barber | 15-3-0 | Women's Flyweight |
| Mayra Bueno Silva | 10-7-1 | Women's Bantamweight |
| Mayton Perea | 9-3 | Welterweight |
| Megan Anderson | 11-5 | Women's Featherweight |
| Mehdi Baghdad | 11-6 | Lightweight |
| Mehemmedeli Osmanli | 12-1-0 | Bantamweight |
| Melinda Fabian | 4-4-1 | Women's Flyweight |
| Melissa Amaya | 8-1 | Women's Strawweight |
| Melissa Croden | 8-4 | Women's Bantamweight |
| Melissa Gatto | 9-4-3 | Women's Flyweight |
| Melissa Martinez | 8-2 | Women's Strawweight |
| Melissa Mullins | 8-3 | Women's Bantamweight |
| Melquizael Costa | 26-8-0 | Lightweight |
| Melsik Baghdasaryan | 8-4 | Featherweight |
| Melton Bowen | 0-1 | Open Weight |
| Melvin Guillard | 32-23 | Lightweight |
| Meng Bo | 23-8-0 | Women's Strawweight |
| Merab Dvalishvili | 22-6 | Bantamweight |
| Michael Aljarouj | 13-4-2 | Flyweight |
| Michael Aswell Jr. | 12-6 | Featherweight |
| Michael Bisping | 30-9 | Middleweight |
| Michael Chandler | 23-11 | Lightweight |
| Michael Chiesa | 20-7 | Welterweight |
| Michael Graves | 10-1-1 | Welterweight |
| Michael Johnson | 25-20 | Lightweight |
| Michael Kuiper | 12-6 | Middleweight |
| Michael McBride | 8-3 | Lightweight |
| Michael McDonald | 8-7 | Lightweight |
| Michael Morales | 19-0-0 | Welterweight |
| Michael Oliveira | 10-0 | Welterweight |
| Michael Page | 26-3 | Middleweight |
| Michael Patt | 0-2 | Light Heavyweight |
| Michael Trizano | 11-3 | Featherweight |
| Michal Figlak | 8-2 | Lightweight |
| Michal Oleksiejczuk | 22-10 | Middleweight |
| Micheal Gillmore | 6-5 | Middleweight |
| Michel Batista | 4-1 | Heavyweight |
| Michelle Montague | 8-0 | Women's Bantamweight |
| Michelle Waterson-Gomez | 18-13 | Women's Strawweight |
| Michel Pereira | 10-6 | Middleweight |
| Michel Prazeres | 27-5 | Welterweight |
| Michel Quinones | 0-2 | Lightweight |
| Michihiro Omigawa | 14-14 | Featherweight |
| Michinori Tanaka | 14-4 | Bantamweight |
| Mickael Lebout | 23-13 | Lightweight |
| Mickey Gall | 9-8 | Middleweight |
| Mick Parkin | 10-2 | Heavyweight |
| Miesha Tate | 20-10 | Women's Bantamweight |
| Miguel Baeza | 10-4 | Welterweight |
| Miguel Torres | 43-9 | Bantamweight |
| Mike Breeden | 11-6 | Lightweight |
| Mike Brown | 8-7 | Featherweight |
| Mike Ciesnolevicz | 2-4 | Light Heavyweight |
| Mike Davis | 12-4 | Lightweight |
| Mike de la Torre | 15-9 | Bantamweight |
| Mike Easton | 13-6 | Bantamweight |
| Mike Grundy | 12-4 | Featherweight |
| Mike Guymon | 3-6 | Lightweight |
| Mike Jackson | 2-2 | Welterweight |
| Mike King | 2-1 | Middleweight |
| Mike Kyle | 23-18 | Heavyweight |
| Mike Lullo | 0-2 | Featherweight |
| Mike Malott | 15-2-1 | Welterweight |
| Mike Massenzio | 13-9 | Middleweight |
| Mike Nickels | 2-4 | Light Heavyweight |
| Mike Perry | 15-8 | Welterweight |
| Mike Pierce | 17-7 | Welterweight |
| Mike Pyle | 27-14 | Welterweight |
| Mike Rhodes | 12-6 | Welterweight |
| Mike Ricci | 12-5 | Lightweight |
| Mike Rio | 9-5 | Lightweight |
| Mike Rodriguez | 12-7 | Light Heavyweight |
| Mike Russow | 16-3 | Heavyweight |
| Mike Santiago | 19-12 | Featherweight |
| Mike Stumpf | 11-4 | Welterweight |
| Mike Swick | 15-6 | Welterweight |
| Mike van Arsdale | 8-5 | Light Heavyweight |
| Mike Wessel | 4-6 | Heavyweight |
| Mike Whitehead | 5-7 | Light Heavyweight |
| Mike Wilkinson | 9-4 | Featherweight |
| Mikey Burnett | 2-1 | Lightweight |
| Milana Dudieva | 13-9 | Women's Bantamweight |
| Miles Johns | 16-5 | Bantamweight |
| Milos Janicic | 19-4 | Lightweight |
| Milton Vieira | 13-8-1 | Featherweight |
| Minoki Ichihara | 0-1 | Open Weight |
| Miranda Granger | 7-3 | Women's Strawweight |
| Miranda Maverick | 17-6 | Women's Flyweight |
| Mirko Filipovic | 38-11 | Heavyweight |
| Mirsad Bektic | 13-4 | Featherweight |
| Misha Cirkunov | 15-9 | Light Heavyweight |
| Mitch Clarke | 11-5 | Lightweight |
| Mitch Gagnon | 12-5 | Bantamweight |
| Mitch Ramirez | 8-4 | Lightweight |
| Mitch Raposo | 12-3 | Flyweight |
| Mizuki | 16-6 | Women's Strawweight |
| Mizuto Hirota | 18-11-1 | Featherweight |
| Modestas Bukauskas | 21-7 | Light Heavyweight |
| Modestino Rodrigues | 8-1-0 | Middleweight |
| Mohammad Yahya | 12-7 | Featherweight |
| Mohammed Usman | 12-4 | Heavyweight |
| Molly McCann | 15-8 | Women's Strawweight |
| Montana De La Rosa | 14-10-1 | Women's Flyweight |
| Montel Jackson | 16-4 | Bantamweight |
| Montse Rendon | 8-2 | Women's Bantamweight |
| Montserrat Conejo Ruiz | 10-5 | Women's Strawweight |
| Morgan Charriere | 21-13-1 | Featherweight |
| Mostapha Al-Turk | 6-6 | Heavyweight |
| Moti Horenstein | 0-3 | Light Heavyweight |
| Motonobu Tezuka | 19-8 | Bantamweight |
| Mounir Lazzez | 11-3 | Welterweight |
| Movsar Evloev | 21-1 | Featherweight |
| Mridul Saikia | 9-2 | — |
| Muhammad Mokaev | 16-0 | Flyweight |
| Muhammad Naimov | 13-5 | Featherweight |
| Muhammad Saidov | 1-0 | — |
| Muin Gafurov | 20-8 | Bantamweight |
| Murilo Bustamante | 15-8 | Middleweight |
| Murtazali Magomedov | 12-0 | Featherweight |
| Muslim Salikhov | 22-8 | Welterweight |
| Myktybek Orolbai | 16-3-1 | Welterweight |
| Myles Jury | 19-6 | Featherweight |
| Nadia Kassem | 5-2 | Women's Flyweight |
| Nad Narimani | 12-4 | Featherweight |
| Nah-Shon Burrell | 19-12 | Welterweight |
| Namo Fazil | 10-2 | — |
| Nam Phan | 21-17 | Bantamweight |
| Namsrai Batbayar | 0-1 | — |
| Nandor Guelmino | 11-5 | Heavyweight |
| Naoki Inoue | 21-5 | Bantamweight |
| Naoyuki Kotani | 33-13 | Lightweight |
| Nasrat Haqparast | 19-7 | Lightweight |
| Nassourdine Imavov | 17-4 | Middleweight |
| Natalia Silva | 22-5-1 | Women's Flyweight |
| Natan Levy | 8-3 | Lightweight |
| Nate Diaz | 22-14 | Lightweight |
| Nate Landwehr | 18-10 | Featherweight |
| Nate Loughran | 11-2 | Middleweight |
| Nate Maness | 16-3 | Flyweight |
| Nate Marquardt | 35-19 | Middleweight |
| Nate Mohr | 1-4 | Lightweight |
| Nate Quarry | 12-4 | Middleweight |
| Nate Schroeder | 1-6 | Light Heavyweight |
| Nathan Coy | 15-7 | Welterweight |
| Nathan Fletcher | 9-3 | Bantamweight |
| Nathaniel Wood | 26-7 | Featherweight |
| Navajo Stirling | 11-0-0 | Light Heavyweight |
| Nazareno Malegarie | 29-6 | Lightweight |
| Nazim Sadykhov | 11-4-1 | Lightweight |
| Neil Grove | 12-8 | Heavyweight |
| Neil Magny | 32-15 | Welterweight |
| Neil Seery | 15-13 | Flyweight |
| Neil Wain | 11-4 | Heavyweight |
| Nell Ariano | 0-1-6 | Light Heavyweight |
| Nicco Montano | 5-3 | Women's Flyweight |
| Nicholas Musoke | 3-3 | Welterweight |
| Nick Agallar | 2-2 | Lightweight |
| Nick Aguirre | 7-3 | Bantamweight |
| Nick Catone | 10-4 | Middleweight |
| Nick Denis | 2-3 | Bantamweight |
| Nick Diaz | 26-10 | Middleweight |
| Nick Fiore | 6-2 | Lightweight |
| Nick Galanti | 10-1 | Middleweight |
| Nick Hein | 14-5 | Lightweight |
| Nick Klein | 6-4 | Middleweight |
| Nick Maximov | 8-2 | Middleweight |
| Nick Osipczak | 5-3 | Welterweight |
| Nick Pace | 7-3 | Bantamweight |
| Nick Penner | 11-3 | Light Heavyweight |
| Nick Ring | 14-4 | Middleweight |
| Nick Roehrick | 9-2 | Light Heavyweight |
| Nick Sanzo | 1-1 | Lightweight |
| Nick Serra | 0-1 | Welterweight |
| Nick Thompson | 1-1 | Welterweight |
| Nicolae Negumereanu | 13-2 | Light Heavyweight |
| Nicolas Dalby | 24-6-2 | Welterweight |
| Nicolle Caliari | 9-5 | Women's Strawweight |
| Nikita Krylov | 31-14 | Light Heavyweight |
| Niklas Backstrom | 11-4 | Featherweight |
| Niklas Stolze | 14-7 | Welterweight |
| Nik Lentz | 30-12-1 | Featherweight |
| Nikolas Motta | 15-6 | Lightweight |
| Nikolay Veretennikov | 14-8 | Welterweight |
| Niko Price | 17-11 | Welterweight |
| Nilson Rojas | 0-1 | — |
| Nina Milosevic | 10-1 | Women's Bantamweight |
| Nina Nunes | 11-7 | Women's Strawweight |
| Nissen Osterneck | 3-4 | Middleweight |
| Noad Lahat | 13-5 | Featherweight |
| Noah Gugnon | 10-3 | Lightweight |
| Noe Hernandez | 0-2 | Middleweight |
| Nohelin Hernandez | 12-6 | Bantamweight |
| Nolan Ticman | 4-3 | Flyweight |
| Nora Cornolle | 10-4 | Women's Bantamweight |
| Norbert Növényi Jr. | 11-1 | Middleweight |
| Nordine Taleb | 15-7 | Welterweight |
| Norifumi Yamamoto | 18-6 | Bantamweight |
| Norma Dumont | 13-4 | Women's Bantamweight |
| Norman Parke | 28-7-1 | Lightweight |
| Nursulton Ruziboev | 37-10-4 | Middleweight |
| Nurullo Aliev | 12-1 | Lightweight |
| Nyamjargal Tumendemberel | 10-1 | Flyweight |
| Oban Elliott | 12-5 | Welterweight |
| Ode Osbourne | 5-8 | Flyweight |
| Oleg Taktarov | 6-4-1 | Open Weight |
| Oli Thompson | 21-14 | Heavyweight |
| Oliver Enkamp | 11-4 | Welterweight |
| Olivier Aubin-Mercier | 21-5 | Lightweight |
| Ollie Schmid | 5-3 | Featherweight |
| Oluwale Bamgbose | 6-4 | Middleweight |
| Omari Akhmedov | 24-8-1 | Middleweight |
| Omar Morales | 11-4 | Lightweight |
| Onassis Parungao | 1-0 | Open Weight |
| Orion Cosce | 8-2 | Welterweight |
| Orlando Wiet | 1-1 | Open Weight |
| Oscar Ravello | 13-4-1 | Middleweight |
| Oskar Piechota | 11-3 | Welterweight |
| Otari Tanzilovi | 11-2 | Bantamweight |
| Ottman Azaitar | 13-3 | Lightweight |
| Oumar Sy | 12-3 | Light Heavyweight |
| Ovince Saint Preux | 27-18 | Light Heavyweight |
| Ozzy Diaz | 10-5 | Middleweight |
| Ozzy Martin | 4-1 | Welterweight |
| Pablo Garza | 12-4 | Featherweight |
| Paddy Holohan | 3-2 | Flyweight |
| Paddy Pimblett | 24-4 | Lightweight |
| Paige VanZant | 8-5 | Women's Flyweight |
| Pannie Kianzad | 17-9 | Women's Bantamweight |
| Papy Abedi | 10-4 | Middleweight |
| Paris Moran | 14-4-1 | Flyweight |
| Parker Porter | 14-9 | Heavyweight |
| Pascal Krauss | 11-2 | Welterweight |
| Pat Audinwood | 11-2 | Lightweight |
| Pat Barry | 8-7 | Heavyweight |
| Patchy Mix | 19-5 | Bantamweight |
| Pat Healy | 34-24 | Lightweight |
| Pat Miletich | 8-5 | Welterweight |
| Patricio Pitbull | 38-9 | Featherweight |
| Patrick Cote | 23-11 | Welterweight |
| Patrick Cummins | 11-7 | Light Heavyweight |
| Patrick Rivera | 13-5 | Welterweight |
| Patrick Smith | 4-1 | Heavyweight |
| Patrick Walsh | 10-3 | Middleweight |
| Patrick Williams | 1-3 | Bantamweight |
| Pat Sabatini | 22-5 | Featherweight |
| Pat Schilling | 0-2 | Featherweight |
| Paul Bradley | 23-10 | Welterweight |
| Paul Buentello | 35-17 | Heavyweight |
| Paul Craig | 17-10-1 | Light Heavyweight |
| Paul Creighton | 0-1 | Lightweight |
| Paul Daley | 44-18 | Welterweight |
| Paul Felder | 18-6 | Lightweight |
| Paul Georgieff | 1-1 | Welterweight |
| Paul Herrera | 0-1 | Open Weight |
| Paul Jones | 1-1 | Light Heavyweight |
| Paul Kelly | 13-5 | Welterweight |
| Paulo Costa | 16-4 | Light Heavyweight |
| Paulo Santos | 0-2 | — |
| Paulo Thiago | 19-10 | Middleweight |
| Paul Redmond | 15-8 | Featherweight |
| Paul Rodriguez | 0-1 | Lightweight |
| Paul Sass | 14-2 | Lightweight |
| Paul Taylor | 5-7 | Heavyweight |
| Paul Varelans | 4-4 | Heavyweight |
| Pavel Andrusca | 9-0-0 | Bantamweight |
| Pawel Pawlak | 24-4 | Welterweight |
| Payton Talbott | 12-1 | Bantamweight |
| Pearl Gonzalez | 11-6 | Women's Strawweight |
| Pedro Falcao | 0-2 | Bantamweight |
| Pedro Munhoz | 20-10 | Bantamweight |
| Pedro Nobre | 18-6 | Flyweight |
| Pedro Rizzo | 14-11 | Heavyweight |
| Peggy Morgan | 4-4 | Women's Featherweight |
| Per Eklund | 2-4 | Lightweight |
| Peter Barrett | 17-6 | Featherweight |
| Pete Rodriguez | 5-2 | Welterweight |
| Peter Sobotta | 17-7 | Welterweight |
| Pete Sell | 10-7 | Welterweight |
| Pete Spratt | 12-18 | Lightweight |
| Pete Williams | 3-6 | Heavyweight |
| Petr Yan | 22-5 | Bantamweight |
| Phil Baroni | 15-18 | Welterweight |
| Phil Davis | 25-8 | Light Heavyweight |
| Phil Harris | 22-12 | Flyweight |
| Phil Hawes | 12-6 | Middleweight |
| Philip De Fries | 2-3 | Heavyweight |
| Philipe Lins | 18-6 | Heavyweight |
| Phil Johns | 2-5 | Lightweight |
| Phillipe Nover | 11-8 | Featherweight |
| Phillip Miller | 3-0 | Middleweight |
| Phil Rowe | 11-7 | Welterweight |
| Piera Rodriguez | 14-2 | Women's Strawweight |
| Piero Guaylupo | 12-0 | Lightweight |
| Pingyuan Liu | 2-2 | Bantamweight |
| Piotr Hallmann | 17-5 | Lightweight |
| Poliana Botelho | 9-5 | Women's Flyweight |
| Polyana Viana | 13-9 | Women's Strawweight |
| Preston LaGrange | 7-1 | Light Heavyweight |
| Preston Parsons | 11-6 | Welterweight |
| Priscila Cachoeira | 14-11 | Women's Bantamweight |
| Puja Tomar | 9-5 | Women's Strawweight |
| Punahele Soriano | 15-5 | Welterweight |
| Quang Le | 9-4 | Bantamweight |
| Quentin Pasley | 4-0-0 | Light Heavyweight |
| Quillan Salkilld | 13-1-0 | Lightweight |
| Quinn Mulhern | 18-4 | Lightweight |
| Quinton Jackson | 38-14 | Light Heavyweight |
| Rabindra Dhant | 10-1-0 | Bantamweight |
| Rachael Ostovich | 4-6 | Women's Flyweight |
| Rafael Alves | 20-12 | Featherweight |
| Rafael Carino | 1-1 | Heavyweight |
| Rafael Cavalcante | 12-7 | Light Heavyweight |
| Rafael Cerqueira | 11-5 | Light Heavyweight |
| Rafael Dos Anjos | 40-23 | Welterweight |
| Rafael Estevam | 14-1 | Bantamweight |
| Rafael Fiziev | 14-5 | Lightweight |
| Rafaello Oliveira | 17-8 | Lightweight |
| Rafael Natal | 21-9-1 | Middleweight |
| Rafael Tobias | 14-3 | Light Heavyweight |
| Rafa Garcia | 20-5 | Lightweight |
| Rafa Garcia Jr. | 7-4 | — |
| Rainy Martinez | 0-1 | Lightweight |
| Ramazan Emeev | 20-6 | Welterweight |
| Ramazan Temirov | 20-4 | Flyweight |
| Rameau Thierry Sokoudjou | 19-18 | Light Heavyweight |
| Ramiro Hernandez | 18-10 | Bantamweight |
| Ramiro Jimenez | 11-0 | Featherweight |
| Ramiz Brahimaj | 14-7 | Welterweight |
| Ramona Pascual | 6-5 | Women's Featherweight |
| Ramon Taveras | 10-4 | Featherweight |
| Ramsey Nijem | 10-9 | Lightweight |
| Randa Markos | 11-12-1 | Women's Strawweight |
| Randy Brown | 21-11 | Welterweight |
| Randy Costa | 7-4 | Bantamweight |
| Randy Couture | 19-11 | Light Heavyweight |
| Rani Yahya | 28-12-1 | Bantamweight |
| Raoni Barcelos | 24-6 | Bantamweight |
| Raphael Assuncao | 28-10 | Bantamweight |
| Raphael Pessoa | 10-4 | Heavyweight |
| Raquel Pennington | 16-10 | Women's Bantamweight |
| Rashad Coulter | 9-5 | Heavyweight |
| Rashad Evans | 20-8-1 | Middleweight |
| Rashid Magomedov | 23-5 | Lightweight |
| Raulian Paiva | 23-6 | Flyweight |
| Raul Rosas Jr. | 14-1 | Bantamweight |
| Ravena Oliveira | 7-5-1 | Women's Flyweight |
| Rayanne dos Santos | 14-9 | Women's Strawweight |
| Ray Borg | 16-5 | Bantamweight |
| Ray Rodriguez | 16-8 | Bantamweight |
| Ray Wizard | 0-2 | Open Weight |
| Razak Al-Hassan | 12-5 | Light Heavyweight |
| Reese Andy | 7-3 | Light Heavyweight |
| Reginaldo Junior | 11-2 | Welterweight |
| Reginaldo Vieira | 16-7 | Bantamweight |
| Regina Tarin | 9-0 | Women's Flyweight |
| Reinier de Ridder | 22-4 | Middleweight |
| Rei Tsuruya | 12-1 | Flyweight |
| Remco Pardoel | 3-2 | Open Weight |
| Renan Barao | 34-9 | Featherweight |
| Renato Moicano | 23-9-1 | Lightweight |
| Renato Sobral | 37-11 | Light Heavyweight |
| Renato Verissimo | 1-4 | Catch Weight |
| Renee Forte | 8-4 | Lightweight |
| Renzo Gracie | 14-7 | Welterweight |
| Reuben Duran | 1-3 | Bantamweight |
| Rex Holman | 0-1 | Light Heavyweight |
| Reza Madadi | 14-6 | Lightweight |
| Reza Nasri | 0-1 | Open Weight |
| Rhys McKee | 15-7-1 | Welterweight |
| Ricardo Abreu | 5-1 | Middleweight |
| Ricardo Almeida | 13-5 | Welterweight |
| Ricardo Funch | 9-6 | Welterweight |
| Ricardo Lamas | 20-8 | Featherweight |
| Ricardo Ramos | 17-8 | Featherweight |
| Ricardo Romero | 11-3 | Light Heavyweight |
| Ricco Rodriguez | 54-26 | Light Heavyweight |
| Richard Crunkilton | 3-4 | Lightweight |
| Richardson Moreira | 0-3 | Middleweight |
| Richard Walsh | 9-5 | Welterweight |
| Rich Attonito | 10-5 | Welterweight |
| Rich Clementi | 45-23 | Lightweight |
| Rich Franklin | 29-7 | Middleweight |
| Richie Hightower | 0-3 | Lightweight |
| Richie Miranda | 13-2 | Lightweight |
| Richie Smullen | 10-3 | Lightweight |
| Richie Vaculik | 11-4 | Flyweight |
| Rick Davis | 0-1 | Lightweight |
| Rick Story | 21-10 | Welterweight |
| Ricky Glenn | 22-9-1 | Welterweight |
| Ricky Rainey | 13-6 | Welterweight |
| Ricky Simon | 22-8-2 | Bantamweight |
| Ricky Turcios | 13-7 | Featherweight |
| Riki Fukuda | 23-9 | Middleweight |
| Rinat Fakhretdinov | 24-1-1 | Welterweight |
| Rin Nakai | 19-2 | Women's Bantamweight |
| Rinya Nakamura | 10-2 | Bantamweight |
| Rizvan Kuniev | 14-4-2 | Heavyweight |
| RJ Harris | 6-1 | Heavyweight |
| Roan Carneiro | 21-12 | Welterweight |
| Robbie Lawler | 30-16 | Welterweight |
| Rob Broughton | 15-8 | Heavyweight |
| Robelis Despaigne | 7-2 | Heavyweight |
| Rob Emerson | 18-12 | Bantamweight |
| Robert Bryczek | 18-8 | Middleweight |
| Robert Drysdale | 7-0 | Light Heavyweight |
| Robert Lucarelli | 0-1 | Heavyweight |
| Robert McDaniel | 1-2 | Middleweight |
| Roberto Romero | 8-5-1 | Featherweight |
| Roberto Soldic | 22-3-2 | Welterweight |
| Roberto Traven | 1-2 | Heavyweight |
| Robert Peralta | 4-3 | Featherweight |
| Robert Ruchala | 0-2 | Featherweight |
| Robert Sanchez | 1-2 | Flyweight |
| Robert Valentin | 13-6-1 | Middleweight |
| Robert Whiteford | 17-5 | Featherweight |
| Robert Whittaker | 28-9-0 | Light Heavyweight |
| Rob Font | 22-11 | Bantamweight |
| Rob Kimmons | 24-9 | Welterweight |
| Rob MacDonald | 5-4 | Heavyweight |
| Rob Wilkinson | 20-5 | Middleweight |
| Rob Yundt | 1-2 | Middleweight |
| Rocky Lee | 3-4 | Featherweight |
| Rodney Wallace | 25-14 | Light Heavyweight |
| Rodolfo Bellato | 13-4-1 | Light Heavyweight |
| Rodolfo Rubio Perez | 0-1 | Featherweight |
| Rodolfo Vieira | 12-5 | Middleweight |
| Rodrigo Damm | 12-9 | Lightweight |
| Rodrigo de Lima | 9-3 | Lightweight |
| Rodrigo Nascimento | 12-5 | Heavyweight |
| Rodrigo Ruas | 0-3 | Middleweight |
| Rodrigo Sezinando | 10-3 | Welterweight |
| Rodrigo Vera | 22-1-1 | Featherweight |
| Roger Bowling | 11-5 | Lightweight |
| Roger Gracie | 8-2 | Light Heavyweight |
| Roger Hollett | 13-5 | Light Heavyweight |
| Roger Huerta | 25-14 | Lightweight |
| Rogerio Bontorin | 17-5 | Flyweight |
| Rogerio Nogueira | 23-10 | Light Heavyweight |
| Roger Narvaez | 7-4 | Middleweight |
| Roger Zapata | 4-3 | Welterweight |
| Roland Delorme | 9-5 | Bantamweight |
| Rolando Bedoya | 14-5 | Lightweight |
| Rolando Delgado | 2-4 | Featherweight |
| Rolando Dy | 10-8 | Bantamweight |
| Roland Payne | 0-1 | Light Heavyweight |
| Roldan Sangcha'an | 4-2 | Flyweight |
| Rolles Gracie | 8-4 | Heavyweight |
| Roman Bogatov | 11-1 | Lightweight |
| Roman Dolidze | 15-6 | Middleweight |
| Roman Kopylov | 17-5 | Middleweight |
| Roman Mitichyan | 1-1 | Welterweight |
| Roman Puga | 6-1 | — |
| Roman Salazar | 12-10 | Bantamweight |
| Romie Aram | 2-1 | Welterweight |
| Ronald Humphrey | 5-0 | — |
| Ronald Jhun | 1-13 | Welterweight |
| Ronaldo Rodriguez | 2-1 | Flyweight |
| Ronda Rousey | 13-2 | Women's Featherweight |
| Ron Faircloth | 1-3 | Light Heavyweight |
| Rongzhu | 28-6 | Lightweight |
| Ronnie Lawrence | 8-2 | Bantamweight |
| Ronny Markes | 22-10 | Middleweight |
| Ron Stallings | 15-8 | Middleweight |
| Ron van Clief | 0-1 | Middleweight |
| Ron Waterman | 5-6-1 | Heavyweight |
| Rony Jason | 15-9 | Featherweight |
| Ronys Torres | 36-7 | Lightweight |
| Roosevelt Roberts | 12-6 | Lightweight |
| Roque Conceição | 12-3 | Flyweight |
| Roque Martinez | 19-9 | Heavyweight |
| Rory MacDonald | 23-10 | Welterweight |
| Rory Markham | 16-6 | Welterweight |
| Rory Singer | 3-5 | Middleweight |
| Rose Namajunas | 15-8 | Women's Flyweight |
| Rosi Sexton | 12-5 | Women's Bantamweight |
| Ross Pearson | 21-17 | Lightweight |
| Ross Pointon | 1-6 | Welterweight |
| Rostem Akman | 7-5 | Welterweight |
| Rousimar Palhares | 19-10 | Welterweight |
| Roxanne Modafferi | 25-21 | Women's Flyweight |
| Royce Alger | 0-2 | Middleweight |
| Royce Gracie | 16-2-1 | Heavyweight |
| Roy Nelson | 23-19 | Heavyweight |
| Royston Wee | 2-1 | Bantamweight |
| Ruan Potts | 4-5 | Heavyweight |
| Rudyard Moncayo | 0-2 | Open Weight |
| Ruslan Magomedov | 15-1 | Heavyweight |
| Russell Doane | 16-8 | Bantamweight |
| Rustam Khabilov | 24-4 | Welterweight |
| Ryan Bader | 31-8 | Light Heavyweight |
| Ryan Benoit | 10-8 | Flyweight |
| Ryan Couture | 12-6 | Lightweight |
| Ryan Gandra | 11-1 | Middleweight |
| Ryan Hall | 9-2 | Featherweight |
| Ryan Janes | 10-3 | Middleweight |
| Ryan Jensen | 19-8 | Middleweight |
| Ryan Jimmo | 19-5 | Light Heavyweight |
| Ryan Kuse | 0-1 | — |
| Ryan LaFlare | 14-3 | Welterweight |
| Ryan Loder | 8-3 | Middleweight |
| Ryan MacDonald | 10-3 | Bantamweight |
| Ryan Madigan | 0-1 | Welterweight |
| Ryan McGillivray | 12-6 | Welterweight |
| Ryan Parker | 0-7 | Light Heavyweight |
| Ryan Roberts | 0-3 | Flyweight |
| Ryan Spann | 24-12 | Heavyweight |
| Ryan Thomas | 0-2 | Welterweight |
| Ryo Chonan | 8-9 | Welterweight |
| Ryo Tajima | 12-3-0 | Bantamweight |
| Ryuho Miyaguchi | 7-2 | Bantamweight |
| Sabah Homasi | 17-12 | Welterweight |
| Sabina Mazo | 10-4 | Women's Flyweight |
| Saeed Hosseini | 0-1 | Lightweight |
| Sage Northcutt | 12-3 | Lightweight |
| Said Nurmagomedov | 18-5 | Bantamweight |
| Saidyokub Kakhramonov | 11-3 | Bantamweight |
| Saimon Oliveira | 18-7 | Bantamweight |
| Sai Wang | 8-6 | Welterweight |
| Sako Chivitchian | 0-1 | Lightweight |
| Salahdine Parnasse | 23-2 | Lightweight |
| Salhahuddin Everett | 5-0 | Welterweight |
| Salim Touahri | 10-4 | Welterweight |
| Sam Adkins | 2-5 | Light Heavyweight |
| Sam Alvey | 34-18-1 | Light Heavyweight |
| Sam Fulton | 0-2 | Heavyweight |
| Sam Hoger | 2-3 | Light Heavyweight |
| Sam Hughes | 11-7 | Women's Strawweight |
| Sammy Morgan | 2-7 | Welterweight |
| Sam Patterson | 15-3-1 | Welterweight |
| Sam Sicilia | 17-11 | Featherweight |
| Sam Stout | 20-12 | Lightweight |
| Samuel Sanches | 11-1-0 | Lightweight |
| Samy Schiavo | 0-3 | Lightweight |
| Sanae Kikuta | 4-5 | Light Heavyweight |
| Sangwook Kim | 13-4 | Lightweight |
| Santiago Luna | 8-1-0 | Bantamweight |
| Santiago Ponzinibbio | 32-10 | Welterweight |
| Saparbeg Safarov | 9-3 | Light Heavyweight |
| Sarah Alpar | 9-6 | Women's Bantamweight |
| Sarah Frota | 8-4 | Women's Strawweight |
| Sarah Kaufman | 22-5 | Women's Featherweight |
| Sarah Moras | 6-8 | Women's Bantamweight |
| Sara McMann | 14-7 | Women's Bantamweight |
| Sasha Palatnikov | 8-5 | Welterweight |
| Satoshi Honma | 1-2 | Heavyweight |
| Saygid Izagakhmaev | 22-4 | Welterweight |
| Scott Adams | 1-1 | Heavyweight |
| Scott Askham | 20-8 | Middleweight |
| Scott Baker | 0-1 | Open Weight |
| Scott Bessac | 1-1 | Open Weight |
| Scott Ferrozzo | 3-2 | Heavyweight |
| Scott Fiedler | 0-1 | Open Weight |
| Scott Holtzman | 14-6 | Lightweight |
| Scott Jorgensen | 15-12 | Bantamweight |
| Scott Junk | 0-2 | Heavyweight |
| Scott Morris | 1-2 | Open Weight |
| Scott Smith | 1-3 | Middleweight |
| Sean Alvarez | 0-1 | Heavyweight |
| Sean Brady | 19-2 | Welterweight |
| Sean Clancy Jr. | 9-0 | — |
| Sean Daugherty | 0-1 | Open Weight |
| Sean Gannon | 0-1 | Heavyweight |
| Sean King III | 7-0 | Featherweight |
| Sean McCorkle | 17-6 | Heavyweight |
| Sean O'Connell | 21-10 | Light Heavyweight |
| Sean O'Malley | 20-3 | Bantamweight |
| Sean Pierson | 14-6 | Welterweight |
| Sean Salmon | 0-10 | Middleweight |
| Sean Sharaf | 5-2 | Heavyweight |
| Sean Sherk | 36-4 | Lightweight |
| Sean Soriano | 14-9 | Lightweight |
| Sean Spencer | 12-7 | Welterweight |
| Sean Strickland | 32-7 | Middleweight |
| Sean Woodson | 14-2-1 | Featherweight |
| Sebastian Szalay | 10-2 | Featherweight |
| Sedriques Dumas | 10-6 | Middleweight |
| Semmy Schilt | 7-6 | Heavyweight |
| Seo Hee Ham | 26-9 | Women's Strawweight |
| Seokhyeon Ko | 14-3 | Welterweight |
| Sergei Pavlovich | 21-3-0 | Heavyweight |
| Sergey Khandozhko | 28-6 | Welterweight |
| Sergey Morozov | 19-5 | Bantamweight |
| Serghei Spivac | 18-7-0 | Heavyweight |
| Sergio Moraes | 14-8-1 | Welterweight |
| Sergio Pettis | 25-8 | Flyweight |
| Serhiy Sidey | 12-2 | Bantamweight |
| Seth Baczynski | 20-17 | Welterweight |
| Seth Petruzelli | 14-8 | Light Heavyweight |
| SeungGuk Choi | 7-3 | Flyweight |
| SeungWoo Choi | 11-8 | Featherweight |
| Shamar Bailey | 15-10 | Lightweight |
| Shamil Abdurakhimov | 20-9 | Heavyweight |
| Shamil Gamzatov | 14-1 | Light Heavyweight |
| Shamil Gaziev | 15-3-0 | Heavyweight |
| Shana Dobson | 4-5 | Women's Flyweight |
| Shane Burgos | 17-5 | Featherweight |
| Shane Campbell | 1-4 | Featherweight |
| Shane Carwin | 12-2 | Heavyweight |
| Shane Collins | 8-0 | Featherweight |
| Shane del Rosario | 11-2 | Heavyweight |
| Shane Howell | 13-11 | Flyweight |
| Shanelle Dyer | 8-1 | Women's Strawweight |
| Shane Nelson | 3-4 | Featherweight |
| Shane Primm | 1-3 | Light Heavyweight |
| Shane Roller | 11-7 | Lightweight |
| Shane Young | 13-8 | Featherweight |
| Shanna Young | 11-10 | Women's Bantamweight |
| Shannon Gugerty | 14-7 | Lightweight |
| Shannon Ross | 13-9 | Flyweight |
| Shara Magomedov | 17-1-0 | Middleweight |
| Shauna Bannon | 7-3 | Women's Strawweight |
| Shavkat Rakhmonov | 19-0 | Welterweight |
| Shawn Jordan | 19-9 | Heavyweight |
| Shayilan Nuerdanbieke | 39-12 | Featherweight |
| Shayna Baszler | 15-11 | Women's Bantamweight |
| Sheila Gaff | 9-7 | Women's Strawweight |
| Sheldon Westcott | 10-3 | Welterweight |
| Shem Rock | 12-3-1 | Lightweight |
| Sherman Pendergarst | 1-9 | Heavyweight |
| Sheymon Moraes | 2-3 | Featherweight |
| Shi Ming | 17-6 | Women's Strawweight |
| Shinsho Anzai | 11-5 | Welterweight |
| Shonie Carter | 6-13 | Welterweight |
| Shunichi Shimizu | 28-13 | Bantamweight |
| Sijara Eubanks | 8-7 | Women's Bantamweight |
| Silvana Gomez Juarez | 11-5 | Women's Flyweight |
| Silvestre Sanchez | 10-1 | Lightweight |
| Simeon Thoresen | 17-6 | Welterweight |
| Sione Latu | 1-0 | Heavyweight |
| Sirwan Kakai | 12-5 | Bantamweight |
| Siyar Bahadurzada | 24-8 | Welterweight |
| Smilla Sundell | 1-0-2 | Women's Bantamweight |
| Soa Palelei | 22-5 | Heavyweight |
| Sodiq Yusuff | 13-5 | Lightweight |
| Sofia Montenegro | 6-3 | Women's Strawweight |
| Solomon Hutcherson | 2-5 | Light Heavyweight |
| Song Kenan | 22-9 | Welterweight |
| Song Yadong | 24-9-2 | Bantamweight |
| Spencer Fisher | 24-9 | Lightweight |
| Spike Carlyle | 15-7 | Featherweight |
| Stan Dorsainvil | 1-0 | — |
| Stanislav Nedkov | 12-2 | Light Heavyweight |
| Stefan Sekulic | 12-6 | Welterweight |
| Stefan Struve | 33-13 | Heavyweight |
| Stephan Bonnar | 15-9 | Light Heavyweight |
| Stephanie Egger | 8-5 | Women's Bantamweight |
| Stephanie Luciano | 8-2-1 | Women's Strawweight |
| Stephen Bass | 0-1 | Featherweight |
| Stephen Thompson | 17-9-1 | Welterweight |
| Steve Berger | 1-12 | Welterweight |
| Steve Bosse | 12-2 | Light Heavyweight |
| Steve Bruno | 2-4 | Welterweight |
| Steve Byrnes | 0-1 | Middleweight |
| Steve Cantwell | 7-6 | Middleweight |
| Steve Erceg | 14-5 | Flyweight |
| Steve Garcia | 19-6 | Featherweight |
| Steve Jennum | 2-1 | Open Weight |
| Steve Judson | 0-2 | Heavyweight |
| Steve Kennedy | 22-9 | Welterweight |
| Steve Lopez | 1-4 | Lightweight |
| Steve Montgomery | 8-5 | Welterweight |
| Steven Asplund | 8-2 | Heavyweight |
| Steve Nelmark | 2-1 | Open Weight |
| Steven Graham | 1-1 | Heavyweight |
| Steven Koslow | 7-1 | Bantamweight |
| Steven Nguyen | 10-2 | Featherweight |
| Steven Peterson | 19-11 | Featherweight |
| Steven Siler | 33-24 | Featherweight |
| Steve Steinbeiss | 0-3 | Middleweight |
| Steve Vigneault | 1-5 | Middleweight |
| Stevie Lynch | 0-1 | Welterweight |
| Stevie Ray | 26-13 | Lightweight |
| Stewart Nicoll | 8-4 | Flyweight |
| Stipe Miocic | 21-5 | Heavyweight |
| Sulangrangbo | 10-4 | Bantamweight |
| Sultan Aliev | 15-3 | Welterweight |
| Suman Mokhtarian | 8-2 | Featherweight |
| Summer Onley | 6-1 | Women's Bantamweight |
| Sumudaerji | 20-7 | Flyweight |
| Sung Bin Jo | 0-1 | Featherweight |
| SuYoung You | 17-4-2 | Bantamweight |
| Syuri Kondo | 6-3 | Women's Strawweight |
| Tabatha Ricci | 12-5 | Women's Strawweight |
| Tae Hyun Bang | 18-10 | Lightweight |
| Tafon Nchukwi | 6-4 | Light Heavyweight |
| Tagir Ulanbekov | 17-3 | Flyweight |
| Tahir Abdullayev | 20-3-0 | Welterweight |
| Tai Bowden | 1-1 | Open Weight |
| Taila Santos | 23-4 | Women's Flyweight |
| Tainara Lisboa | 7-5 | Women's Bantamweight |
| Tai Tuivasa | 15-11 | Heavyweight |
| Taiyilake Nueraji | 12-1-1 | Welterweight |
| Takanori Gomi | 36-15 | Lightweight |
| Takashi Sato | 16-8 | Welterweight |
| Takaya Suzuki | 8-1-0 | Flyweight |
| Takenori Sato | 16-12 | Lightweight |
| Takeya Mizugaki | 23-14 | Bantamweight |
| Talita Alencar | 8-2-1 | Women's Strawweight |
| Talita Bernardo | 11-5 | Women's Bantamweight |
| Tallison Teixeira | 9-2-0 | Heavyweight |
| Tamdan McCrory | 14-5 | Welterweight |
| Tamires Vidal | 7-4 | Women's Bantamweight |
| Taner Trembley | 7-1 | — |
| Tanner Boser | 23-11-1 | Heavyweight |
| Tarec Saffiedine | 16-7 | Welterweight |
| Tateki Matsuda | 15-11 | Flyweight |
| Tatiana Suarez | 17-1 | Women's Strawweight |
| Tatsuro Taira | 18-2 | Flyweight |
| Tatsuya Kawajiri | 37-14 | Featherweight |
| Taylor Lapilus | 26-4 | Bantamweight |
| Tecia Pennington | 15-8 | Women's Strawweight |
| Tedd Williams | 1-1 | Heavyweight |
| Te Edwards | 6-3 | Lightweight |
| Teemu Packalen | 8-3 | Lightweight |
| Tereza Bleda | 7-2 | Women's Flyweight |
| Terrance Chatman | 0-1 | — |
| Terrance McKinney | 18-9-0 | Lightweight |
| Terrence Mitchell | 14-5 | Bantamweight |
| Terrion Ware | 17-11 | Bantamweight |
| Terry Etim | 16-5 | Lightweight |
| Terry Martin | 6-10 | Middleweight |
| Teruto Ishihara | 12-12-1 | Featherweight |
| Thaddeus Luster | 0-1 | Open Weight |
| Thales Leites | 28-9 | Middleweight |
| Themba Gorimbo | 14-7 | Welterweight |
| Theodor Berggren | 8-5 | Welterweight |
| Theo Haig | 7-2 | Middleweight |
| Thiago Alves | 24-15 | Welterweight |
| Thiago Moises | 19-10 | Lightweight |
| Thiago Perpetuo | 9-4 | Welterweight |
| Thiago Santos | 22-13 | Light Heavyweight |
| Thiago Silva | 7-4 | Flyweight |
| Thiago Tavares | 22-10-1 | Featherweight |
| Thibault Gouti | 17-7 | Lightweight |
| Thomas Almeida | 22-5 | Bantamweight |
| Thomas Gifford | 17-9 | Lightweight |
| Thomas Petersen | 12-5 | Heavyweight |
| Thomas Ramirez | 0-1 | Open Weight |
| Tiago dos Santos e Silva | 2-2 | Featherweight |
| Tiki Ghosn | 3-7 | Welterweight |
| Tim Boetsch | 21-14 | Middleweight |
| Tim Credeur | 12-4 | Middleweight |
| Tim Elliott | 26-16-1 | Flyweight |
| Tim Gorman | 8-4 | Bantamweight |
| Tim Hague | 21-13 | Heavyweight |
| Tim Kennedy | 18-6 | Middleweight |
| Tim Lajcik | 0-4-1 | Heavyweight |
| Tim McKenzie | 3-6 | Middleweight |
| Tim Means | 34-17-1 | Welterweight |
| Timmy Cuamba | 11-5 | Bantamweight |
| Timothy Johnson | 4-3 | Heavyweight |
| Tim Sylvia | 31-10 | Heavyweight |
| Timur Valiev | 19-4 | Featherweight |
| Tim Williams | 15-5 | Middleweight |
| Tina Black | 1-0 | — |
| Tina Lahdemaki | 5-1 | Women's Strawweight |
| Tito Ortiz | 21-12-1 | Light Heavyweight |
| TJ Brown | 17-12 | Featherweight |
| TJ Dillashaw | 18-5 | Bantamweight |
| TJ Grant | 21-5 | Lightweight |
| TJ Laramie | 14-5 | Featherweight |
| TJ O'Brien | 20-8 | Lightweight |
| TJ Waldburger | 16-9 | Welterweight |
| Todd Brown | 15-4 | Catchweight |
| Todd Butler | 0-3 | Middleweight |
| Todd Duffee | 10-4 | Heavyweight |
| Todd Medina | 1-3 | Light Heavyweight |
| Tofiq Musayev | 24-6 | Lightweight |
| Tom Aspinall | 15-3 | Heavyweight |
| Tomasz Drwal | 23-6 | Middleweight |
| Tom Blackledge | 10-7 | Light Heavyweight |
| Tom Breese | 19-7 | Middleweight |
| Tom DeBlass | 9-2 | Middleweight |
| Tom Duquesnoy | 16-2 | Bantamweight |
| Tom Egan | 0-2 | Welterweight |
| Tom Gallicchio | 19-11 | Lightweight |
| Tom Lawlor | 11-8 | Light Heavyweight |
| Tom Murphy | 8-0 | Light Heavyweight |
| Tommy Gantt | 13-0-1 | Lightweight |
| Tommy Hayden | 9-3 | Featherweight |
| Tommy McMillen | 12-0 | Featherweight |
| Tommy Speer | 3-5 | Welterweight |
| Tom Niinimaki | 22-8 | Bantamweight |
| Tom Nolan | 13-1 | Lightweight |
| Tom Pagliarulo | 11-2 | — |
| Tom Watson | 17-9 | Middleweight |
| Tonya Evinger | 19-9 | Women's Bantamweight |
| Tony DeSouza | 4-3 | Welterweight |
| Tony Ferguson | 26-11 | Welterweight |
| Tony Fryklund | 4-7 | Middleweight |
| Tony Gravely | 23-9 | Bantamweight |
| Tony Halme | 0-1 | Heavyweight |
| Tony Kelley | 8-3 | Featherweight |
| Tony Petarra | 0-2 | Light Heavyweight |
| Tony Sims | 10-4 | Lightweight |
| Torrez Finney | 11-1 | Middleweight |
| Tor Troeng | 16-7 | Middleweight |
| Toshiomi Kazama | 11-5 | Bantamweight |
| Townsend Saunders | 0-2 | Lightweight |
| Tracy Cortez | 13-4 | Women's Flyweight |
| Tra Telligman | 7-5 | Heavyweight |
| Travis Browne | 18-7-1 | Heavyweight |
| Travis Fulton | 3-26 | Heavyweight |
| Travis Lutter | 10-6 | Middleweight |
| Travis Wiuff | 74-22 | Heavyweight |
| Trent Jenkins | 0-2 | Open Weight |
| Trent Miller | 10-3 | — |
| Tresean Gore | 8-4 | Middleweight |
| Tre'ston Vines | 10-4 | Middleweight |
| Treston Vines | — | — |
| Trevin Giles | 16-7 | Welterweight |
| Trevin Jones | 14-11 | Bantamweight |
| Trevor Peek | 9-4-1 | Featherweight |
| Trevor Prangley | 31-11 | Light Heavyweight |
| Trevor Smith | 5-7 | Middleweight |
| Trey Ogden | 18-7 | Lightweight |
| Trey Waters | 11-2 | Welterweight |
| Tristan Connelly | 14-9 | Welterweight |
| Troy Mandaloniz | 1-1 | Welterweight |
| Tsuyoshi Kohsaka | 3-3 | Heavyweight |
| Tucker Lutz | 12-4 | Lightweight |
| Tuco Tokkos | 11-6 | Light Heavyweight |
| Tulio Palhares | 1-2 | Welterweight |
| Tyler Diamond | 14-4 | Featherweight |
| Tyler Toner | 3-5 | Featherweight |
| Ty Miller | 8-0-1 | Welterweight |
| Tyrell Fortune | 18-4-2 | Heavyweight |
| Tyrone Roberts | 1-2 | Middleweight |
| Tyron Woodley | 19-7-1 | Welterweight |
| Tyshawn Williams | 9-0 | Featherweight |
| Tyson Griffin | 16-8 | Featherweight |
| Tyson Nam | 21-15 | Flyweight |
| Tyson Pedro | 10-7 | Light Heavyweight |
| Ulysses Gomez | 9-5 | Flyweight |
| Umar Nurmagomedov | 20-2 | Bantamweight |
| Uran Satybaldiev | 9-1-0 | Light Heavyweight |
| Uriah Hall | 19-11 | Middleweight |
| Urijah Faber | 35-11 | Bantamweight |
| Uros Medic | 14-3-0 | Welterweight |
| Vagner Rocha | 13-4 | Lightweight |
| Valentina Shevchenko | 26-4-2 | Women's Flyweight |
| Valerie Letourneau | 10-7 | Women's Strawweight |
| Valeri Ignatov | 0-2 | Lightweight |
| Valesca Machado | 15-4-0 | Women's Strawweight |
| Valmir Lazaro | 13-4 | Lightweight |
| Valter Walker | 16-1 | Heavyweight |
| Val Woodburn | 9-2 | Middleweight |
| Vanessa Demopoulos | 11-9 | Women's Strawweight |
| Vanessa Melo | 11-10 | Women's Bantamweight |
| Vaughan Lee | 14-15 | Bantamweight |
| Vernon Ramos Ho | 0-1 | Welterweight |
| Vernon White | 2-9-1 | Middleweight |
| Veronica Hardy | 10-5-1 | Women's Flyweight |
| Viacheslav Borshchev | 8-7-1 | Lightweight |
| Vicente Luque | 25-13-1 | Middleweight |
| Victor Altamirano | 12-5 | Flyweight |
| Victor Henry | 25-7 | Bantamweight |
| Victor Hugo | 26-5 | Featherweight |
| Victoria Leonardo | 10-8 | Women's Flyweight |
| Victor Martinez | 0-2 | Lightweight |
| Victor Rodriguez | 0-2 | Flyweight |
| Victor Valenzuela | 1-3 | Welterweight |
| Victor Valimaki | 18-11 | Light Heavyweight |
| Vik Grujic | 6-7 | Welterweight |
| Viktoriia Dudakova | 9-2 | Women's Strawweight |
| Viktor Pesta | 19-9 | Heavyweight |
| Vince Cachero | 7-4 | Featherweight |
| Vince Morales | 16-11 | Bantamweight |
| Vinc Pichel | 14-7 | Lightweight |
| Vinicius Moreira | 9-6 | Light Heavyweight |
| Vinicius Oliveira | 25-4 | Featherweight |
| Vinicius Queiroz | 8-4 | Heavyweight |
| Vinicius Salvador | 14-8 | Bantamweight |
| Vinny Magalhaes | 19-12 | Light Heavyweight |
| Virna Jandiroba | 24-5 | Women's Strawweight |
| Viscardi Andrade | 19-9 | Welterweight |
| Vitor Belfort | 26-14 | Middleweight |
| Vitor Miranda | 3-5 | Middleweight |
| Vitor Petrino | 15-2 | Heavyweight |
| Viviane Araujo | 7-6 | Flyweight |
| Viviane Pereira | 15-3 | Women's Strawweight |
| Vladimir Matyushenko | 27-8 | Light Heavyweight |
| Vlasto Cepo | 0-1 | — |
| Volkan Oezdemir | 21-8 | Light Heavyweight |
| Wade Shipp | 0-1 | Heavyweight |
| Wagner Campos | 0-4 | Featherweight |
| Wagner Prado | 14-4 | Light Heavyweight |
| Wagner Silva | 0-4 | Middleweight |
| Waldo Cortes Acosta | 17-5 | Heavyweight |
| Walel Watson | 13-12 | Bantamweight |
| Wallid Ismail | 1-3 | Middleweight |
| Walt Harris | 13-10 | Heavyweight |
| Wanderlei Silva | 35-14 | Heavyweight |
| Wang Cong | 11-2 | Women's Flyweight |
| Wang Guan | 18-1 | Featherweight |
| Warlley Alves | 16-8 | Middleweight |
| War Machine | 14-5 | Welterweight |
| Waylon Lowe | 16-7 | Featherweight |
| Wellington Turman | 18-9 | Welterweight |
| Wendell Oliveira Marques | 0-2 | Welterweight |
| Wes Albritton | 0-1 | Lightweight |
| Wes Combs | 20-5 | Light Heavyweight |
| Wesley Correira | 5-5 | Heavyweight |
| Wes Schultz | 9-4 | Middleweight |
| Wes Sims | 0-8 | Heavyweight |
| Westin Wilson | 17-10 | Featherweight |
| Willamy Freire | 2-3 | Lightweight |
| Will Brooks | 26-5 | Lightweight |
| Will Campuzano | 12-6 | Flyweight |
| Will Chope | 24-14 | Featherweight |
| William Gomis | 16-4 | Featherweight |
| William Knight | 11-6 | Light Heavyweight |
| William Macario | 10-5 | Welterweight |
| Willie Gates | 12-8 | Flyweight |
| Will Rentz | 8-3 | Welterweight |
| Wilson Gouveia | 13-8 | Light Heavyweight |
| Wilson Reis | 30-15 | Flyweight |
| Wulijiburen | 20-9 | Featherweight |
| Wu Yanan | 12-7 | Women's Flyweight |
| Xavier Foupa-Pokam | 3-9 | Middleweight |
| Xiao Long | 27-12 | Bantamweight |
| Xiong Jingnan | 0-2 | — |
| Yadier del Valle | 11-1 | Featherweight |
| Yair Rodriguez | 21-5 | Featherweight |
| Yanal Ashmouz | 8-2 | Lightweight |
| Yana Santos | 17-10-1 | Women's Bantamweight |
| Yan Cabral | 12-3 | Lightweight |
| Yancy Medeiros | 17-9 | Lightweight |
| Yanis Ghemmouri | 13-4 | Bantamweight |
| Yan Xiaonan | 19-6-1 | Women's Strawweight |
| Yaotzin Meza | 21-11 | Featherweight |
| Yao Zhikui | 2-4 | Flyweight |
| Yaroslav Amosov | 30-1-0 | Welterweight |
| Yasuhiro Urushitani | 20-7 | Flyweight |
| Yazmin Jauregui | 12-2 | Women's Strawweight |
| YiSak Lee | 0-1 | — |
| Yizha | 26-6 | Featherweight |
| Yoel Romero | 16-7 | Middleweight |
| Yohan Lainesse | 9-3 | Welterweight |
| Yoislandy Izquierdo | 10-4 | Lightweight |
| Yoji Anjo | 0-4 | Middleweight |
| Yorgan De Castro | 12-6 | Heavyweight |
| Yosdenis Cedeno | 11-7 | Lightweight |
| Yoshihiro Akiyama | 15-7 | Welterweight |
| Yoshiki Takahashi | 1-3 | Middleweight |
| Yoshinori Horie | 10-3 | Featherweight |
| Yoshiyuki Yoshida | 17-8 | Welterweight |
| Yousri Belgaroui | 11-3-0 | Middleweight |
| Youssef Zalal | 18-6-1 | Featherweight |
| Yui Chul Nam | 18-6 | Featherweight |
| Yuki Kondo | 4-15 | Welterweight |
| Yuki Sasaki | 1-10 | Middleweight |
| Yuneisy Duben | 6-2-1 | Women's Flyweight |
| Yuri Vaulin | 0-1 | Lightweight |
| Yuri Villefort | 11-8 | Welterweight |
| Yusaku Kinoshita | 6-5 | Welterweight |
| Yushin Okami | 36-15 | Middleweight |
| Yusuke Kasuya | 10-6 | Lightweight |
| Yuta Sasaki | 4-5 | Flyweight |
| Yves Edwards | 42-22 | Lightweight |
| Yves Jabouin | 20-11 | Bantamweight |
| Zabit Magomedsharipov | 18-1 | Featherweight |
| Zachary Scroggin | 0-1 | Welterweight |
| Zach Light | 0-5 | Welterweight |
| Zach Makovsky | 20-10 | Flyweight |
| Zach Reese | 12-4 | Middleweight |
| Zac Pauga | 7-4 | Heavyweight |
| Zak Cummings | 25-7 | Middleweight |
| Zak Ottow | 20-8 | Welterweight |
| Zane Frazier | 0-2 | Open Weight |
| Zarah Fairn | 6-6 | Women's Featherweight |
| Zarrukh Adashev | 4-4 | Flyweight |
| Zaurbek Sabanov | 4-1 | Heavyweight |
| Zelim Imadaev | 8-3 | Welterweight |
| Zevan Hunt | 7-1 | Welterweight |
| Zhalgas Zhumagulov | 15-9 | Flyweight |
| Zhang Lipeng | 2-2 | Lightweight |
| Zhang Mingyang | 19-8 | Light Heavyweight |
| Zhang Tiequan | 1-3 | Lightweight |
| Zhang Weili | 26-4 | Women's Flyweight |
| Zhu Kangjie | 20-6-1 | Featherweight |
| Zubaira Tukhugov | 20-6-1 | Featherweight |
| Zviad Lazishvili | 13-1 | Bantamweight |
| Zygimantas Ramaska | 9-3 | Featherweight |