| Fighter | Record | Last Bout |
|---|---|---|
| Louis Gaudinot | 8-4-0 (1 NC) | 2015-01-03 |
| Louis Smolka | 17-9-0 | 2022-05-14 |
| Lowell Anderson | 0-1-0 | 1999-09-24 |
| Luan Chagas | 15-3-1 | 2018-04-21 |
| Lucas Martins | 19-3-0 | 2016-04-10 |
| Lucie Pudilova | 14-10-0 | 2024-07-20 |
| Lucio Linhares | 19-8-0 | 2010-03-31 |
| Luigi Fioravanti | 26-15-0 | 2009-02-07 |
| Luigi Vendramini | 9-3-0 | 2021-09-04 |
| Luis Henrique | 10-5-0 (1 NC) | 2018-09-22 |
| Luis Pajuelo | 8-2-0 | 2024-03-23 |
| Luis Pena | 9-3-0 | 2021-04-17 |
| Luis Ramos | 20-10-2 | 2012-06-22 |
| Luis Saldana | 16-7-1 | 2022-08-20 |
| Luiz Cane | 17-7-0 (1 NC) | 2012-10-13 |
| Luiz Dutra | 13-6-1 | 2015-05-30 |
| Lukasz Sajewski | 13-3-0 | 2016-10-08 |
| Luke Barnatt | 13-4-0 | 2015-05-16 |
| Luke Caudillo | 17-17-0 | 2007-11-17 |
| Luke Cummo | 6-6-0 | 2008-08-09 |
| Luke Jumeau | 13-5-0 | 2019-10-05 |
| Luke Rockhold | 16-6-0 | 2022-08-20 |
| Luke Sanders | 13-5-0 | 2021-05-01 |
| Luke Zachrich | 14-4-0 | 2014-11-07 |
| Lyman Good | 21-6-0 (1 NC) | 2020-06-20 |
| Lyoto Machida | 24-8-0 | 2018-05-12 |
| Mac Danzig | 21-12-1 | 2013-12-14 |
| Maciej Jewtuszko | 12-3-0 | 2011-02-26 |
| Mackens Semerzier | 8-4-0 (1 NC) | 2012-03-02 |
| Mads Burnell | 9-3-0 | 2018-05-27 |
| Magnus Cedenblad | 14-5-0 | 2016-11-19 |
| Magomed Bibulatov | 14-2-0 | 2019-02-02 |
| Magomed Mustafaev | 14-4-0 | 2020-02-22 |
| Maia Stevenson | 6-5-0 | 2018-02-03 |
| Maiquel Falcao | 37-10-0 (1 NC) | 2010-11-20 |
| Mairbek Taisumov | 27-6-0 | 2019-09-07 |
| Makhmud Muradov | 26-8-0 (1 NC) | 2024-02-03 |
| Maki Pitolo | 13-9-0 | 2021-12-04 |
| Makwan Amirkhani | 17-9-0 | 2023-03-18 |
| Malcolm Gordon | 14-8-0 | 2024-01-20 |
| Mallory Martin | 7-5-0 | 2021-12-04 |
| Mana Martinez | 10-4-0 | 2023-03-04 |
| Mandy Bohm | 8-2-0 (1 NC) | 2023-05-13 |
| Manny Bermudez | 14-2-0 | 2019-10-18 |
| Manuel Rodriguez | 11-5-0 | 2012-12-14 |
| Manvel Gamburyan | 15-10-0 (1 NC) | 2016-11-19 |
| Mara Romero Borella | 12-9-0 (2 NC) | 2020-09-19 |
| Marc Diakiese | 17-7-0 | 2023-11-04 |
| Marcel Fortuna | 9-3-0 | 2017-11-11 |
| Marcelo Aguiar | 2-3-1 | 2000-06-09 |