| Fighter | Record | Last Bout |
|---|---|---|
| Alberta Cerra Leon | 0-1-0 | 1994-03-11 |
| Alberto Crane | 15-5-0 | 2008-01-23 |
| Alberto Mina | 13-1-0 | 2018-05-12 |
| Alberto Montes | 12-2-0 | 2026-07-18 |
| Alberto Uda | 12-2-0 | 2016-08-20 |
| Alden Coria | 13-3-0 (1 NC) | 2026-10-03 |
| Alejandro Perez | 23-9-1 | 2022-02-26 |
| Aleksa Camur | 6-3-0 | 2023-08-05 |
| Aleksandar Rakic | 15-6-0 | 2026-08-01 |
| Aleksandra Albu | 3-2-0 | 2019-10-26 |
| Aleksandre Topuria | 7-1-0 | 2025-11-22 |
| Aleksei Kunchenko | 20-2-0 | 2020-03-14 |
| Aleksei Oleinik | 60-17-1 | 2022-10-01 |
| Alen Amedovski | 8-4-0 | 2022-09-17 |
| Alessandro Costa | 17-5-0 | 2026-07-11 |
| Alessio Di Chirico | 13-7-0 | 2022-09-03 |
| Alessio Sakara | 19-11-0 (2 NC) | 2013-10-26 |
| Alex Andrade | 10-5-0 | 2000-06-09 |
| Alex Caceres | 21-15-0 (1 NC) | 2024-05-11 |
| 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 Morono | 24-13-0 (1 NC) | 2026-02-07 |
| Alex Nicholson | 7-4-0 | 2017-05-28 |
| Alex Oliveira | 22-12-1 (2 NC) | 2022-03-05 |
| Alex Pereira | 13-4-0 | 2026-06-14 |
| Alex Perez | 26-11-0 (1 NC) | 2026-08-29 |
| 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 |
| Alexa Grasso | 17-5-1 | 2026-09-12 |
| Alexander Gustafsson | 18-8-0 | 2022-07-23 |
| Alexander Hernandez | 18-9-0 | 2026-10-03 |
| Alexander Munoz | 7-2-0 | 2023-07-15 |
| Alexander Poppeck | 21-6-0 (1 NC) | 2026-08-01 |
| Alexander Volkanovski | 28-4-0 | 2026-10-24 |
| Alexander Volkov | 40-11-0 | 2026-10-24 |
| Alexander Yakovlev | 24-10-1 | 2020-10-24 |
| Alexandr Romanov | 18-3-0 | 2024-11-02 |
| Alexandre Barros | 22-11-0 | 2009-01-17 |
| Alexandre Dantas | 0-3-0 | 2003-02-28 |
| Alexandre Ferreira | 18-6-0 | 2010-11-13 |
| Alexandre Pantoja | 30-6-0 | 2026-09-19 |