| Fighter | Record | Last Bout |
|---|---|---|
| Alex Chambers | 5-5-0 | 2018-09-22 |
| Alex Da Silva | 21-4-0 | 2022-06-04 |
| Alex Garcia | 15-6-0 | 2018-10-27 |
| Alex Gorgees | 6-1-0 | 2018-12-01 |
| Alex Hunter | 2-0-0 | 1997-10-17 |
| Alex Karalexis | 10-6-0 | 2006-01-16 |
| Alex Nicholson | 7-4-0 | 2017-05-28 |
| Alex Oliveira | 22-12-1 (2 NC) | 2022-03-05 |
| Alex Reyes | 13-5-0 | 2024-08-17 |
| Alex Ricci | 10-5-0 | 2017-02-19 |
| Alex Schoenauer | 15-10-0 | 2005-04-09 |
| Alex Soto | 8-3-1 | 2012-05-15 |
| Alex Stiebling | 19-11-1 (1 NC) | 2000-11-17 |
| Alex Torres | 5-4-0 | 2015-02-28 |
| Alex White | 13-6-0 | 2019-10-26 |
| Alexander Gustafsson | 18-8-0 | 2022-07-23 |
| Alexander Munoz | 7-2-0 | 2023-07-15 |
| Alexander Yakovlev | 24-10-1 | 2020-10-24 |
| Alexandre Barros | 22-11-0 | 2009-01-17 |
| Alexandre Dantas | 0-3-0 | 2003-02-28 |
| Alexandre Ferreira | 18-6-0 | 2010-11-13 |
| Alexis Davis | 21-11-0 | 2022-02-05 |
| Alexis Dufresne | 6-3-0 | 2015-01-03 |
| Alfonso Alcarez | 1-3-1 | 1999-09-24 |
| Ali AlQaisi | 8-5-0 | 2020-10-10 |
| Ali Bagautinov | 15-6-0 | 2016-11-19 |
| Aliaskhab Khizriev | 14-0-0 (1 NC) | 2024-02-03 |
| Alistair Overeem | 47-19-0 (1 NC) | 2021-02-06 |
| Allan Goes | 10-5-2 | 1998-05-15 |
| Allan Zuniga | 13-1-0 | 2018-07-06 |
| Allen Berube | 4-3-0 | 2007-06-23 |
| Allen Crowder | 10-4-0 (1 NC) | 2019-06-22 |
| Alptekin Ozkilic | 9-5-0 | 2015-05-09 |
| Alvaro Herrera Mendoza | 9-6-0 | 2018-07-28 |
| Alvin Robinson | 15-9-0 | 2008-11-15 |
| Amanda Cooper | 3-5-0 | 2018-11-10 |
| Amanda Nunes | 23-5-0 | 2023-06-10 |
| Amar Suloev | 24-7-0 | 2002-05-10 |
| Amaury Bitetti | 5-2-0 | 2000-06-09 |
| Amilcar Alves | 15-12-0 | 2011-01-22 |
| Amir Sadollah | 6-5-0 | 2014-09-20 |
| Anderson Dos Santos | 21-9-0 | 2021-08-07 |
| Anderson Silva | 34-11-0 (1 NC) | 2020-10-31 |
| Andre Ewell | 17-9-0 | 2021-12-18 |
| Andre Fialho | 16-8-0 (1 NC) | 2023-09-23 |
| Andre Gusmao | 6-3-0 | 2009-05-23 |
| Andre Pederneiras | 1-1-2 | 1999-07-16 |
| Andre Roberts | 14-2-1 | 1999-07-16 |
| Andre Soukhamthath | 13-8-0 | 2019-08-31 |
| Andre Winner | 21-11-2 | 2011-07-02 |