| Fighter | Record | Last Bout |
|---|---|---|
| Kurt Holobaugh | 22-10-0 (1 NC) | 2025-05-31 |
| Kurt Pellegrino | 16-7-0 | 2011-03-19 |
| Kurtis Campbell | 9-1-0 | 2026-09-05 |
| Kwan Ho Kwak | 9-2-0 | 2017-06-17 |
| Kyle Bochniak | 8-5-0 | 2019-10-18 |
| Kyle Bradley | 19-12-0 (1 NC) | 2010-01-11 |
| Kyle Daukaus | 17-5-0 (1 NC) | 2026-10-17 |
| Kyle Kingsbury | 11-6-0 (1 NC) | 2014-07-26 |
| Kyle Nelson | 17-7-1 | 2026-03-28 |
| Kyle Noke | 22-10-1 | 2016-11-26 |
| Kyle Prepolec | 18-11-0 | 2026-08-01 |
| Kyle Stewart | 11-3-0 | 2019-07-27 |
| Kyle Watson | 13-8-1 | 2011-04-30 |
| Kyler Phillips | 12-5-0 | 2026-04-18 |
| Kyoji Horiguchi | 36-6-0 (1 NC) | 2026-06-20 |
| Kyung Ho Kang | 19-11-0 (1 NC) | 2024-06-22 |
| Lance Benoist | 7-2-0 | 2014-06-07 |
| Lance Gibson | 4-5-0 | 2000-12-16 |
| Lance Gibson Jr. | 10-2-0 | 2026-03-28 |
| Lando Vannata | 12-8-2 | 2026-04-04 |
| Landon Quinones | 7-3-1 | 2024-02-03 |
| Lara Procopio | 7-2-0 | 2021-06-19 |
| Larissa Pacheco | 10-2-0 | 2015-03-14 |
| Larry Cureton | 0-2-0 | 1995-09-08 |
| Laureano Staropoli | 9-5-0 | 2021-10-23 |
| Lauren Mueller | 5-3-0 | 2019-10-12 |
| Lauren Murphy | 16-7-0 | 2025-07-12 |
| Lavar Johnson | 18-10-0 | 2013-02-23 |
| Laverne Clark | 27-21-1 | 2000-09-22 |
| Lawrence Lui | 8-2-0 | 2026-08-29 |
| Leah Letson | 5-3-0 | 2021-11-13 |
| Leandro Issa | 13-6-0 | 2016-09-03 |
| Leandro Silva | 20-6-1 (1 NC) | 2016-09-03 |
| Lee Murray | 8-2-1 (1 NC) | 2004-01-31 |
| Leigh Remedios | 18-10-2 | 2002-07-13 |
| Leo Kuntz | 18-4-1 | 2015-11-28 |
| Leon Edwards | 22-6-0 (1 NC) | 2025-11-15 |
| Leon Shahbazyan | 12-5-0 | 2026-06-20 |
| Leonard Garcia | 18-13-1 | 2013-04-27 |
| Leonardo Guimaraes | 11-5-0 (1 NC) | 2016-09-17 |
| Leonardo Mafra | 13-4-0 | 2015-07-18 |
| Leonardo Morales | 6-2-0 | 2015-06-06 |
| Leonardo Santos | 18-7-1 | 2022-08-20 |
| Lerone Murphy | 17-1-1 | 2026-03-21 |
| Lerryan Douglas | 14-6-0 | 2026-08-22 |
| Leslie Smith | 10-7-1 | 2017-07-16 |
| Levan Chokheli | 15-3-0 (1 NC) | 2026-06-20 |
| Levan Makashvili | 15-2-1 | 2016-01-30 |
| Levi Rodrigues Jr. | 5-2-0 (1 NC) | 2026-08-29 |
| Lewis Gonzalez | 11-3-0 | 2015-06-27 |