| Fighter | Record | Last Bout |
|---|---|---|
| Moti Horenstein | 1-6-0 | 1997-07-27 |
| Motonobu Tezuka | 28-12-7 | 2013-02-16 |
| Mounir Lazzez | 11-3-0 | 2023-01-21 |
| Muhammad Mokaev | 13-0-0 (1 NC) | 2024-07-27 |
| Murilo Bustamante | 15-8-1 | 2002-05-10 |
| Myles Jury | 17-4-0 | 2019-02-17 |
| Nad Narimani | 12-4-0 | 2020-07-18 |
| Nadia Kassem | 5-2-0 | 2019-10-05 |
| Nah-Shon Burrell | 15-7-0 (1 NC) | 2013-05-25 |
| Nam Phan | 21-17-0 | 2014-03-01 |
| Nandor Guelmino | 11-5-1 | 2013-09-21 |
| Naoki Inoue | 11-1-0 | 2018-06-23 |
| Naoyuki Kotani | 34-14-7 | 2015-09-26 |
| Natan Levy | 8-2-0 | 2024-03-16 |
| Nate Diaz | 22-13-0 | 2022-09-10 |
| Nate Loughran | 11-2-0 | 2008-12-10 |
| Nate Maness | 16-3-0 | 2024-06-15 |
| Nate Marquardt | 35-19-2 | 2017-11-11 |
| Nate Mohr | 9-7-0 | 2009-01-17 |
| Nate Quarry | 12-4-0 | 2010-03-31 |
| Nate Schroeder | 11-10-0 | 2000-06-09 |
| Nathan Coy | 15-7-0 | 2017-04-15 |
| Nazareno Malegarie | 28-4-0 | 2015-09-05 |
| Neil Grove | 12-8-1 | 2009-02-21 |
| Neil Seery | 16-13-0 | 2017-07-16 |
| Neil Wain | 13-4-0 | 2008-10-18 |
| Nicco Montano | 5-3-0 | 2019-07-13 |
| Nicholas Musoke | 13-5-0 (1 NC) | 2017-05-28 |
| Nick Agallar | 24-6-0 | 2003-11-21 |
| Nick Aguirre | 7-2-0 | 2023-11-18 |
| Nick Catone | 10-4-0 | 2014-02-01 |
| Nick Denis | 11-3-0 | 2012-05-05 |
| Nick Diaz | 26-10-0 (2 NC) | 2021-09-25 |
| Nick Fiore | 6-2-0 | 2023-05-20 |
| Nick Hein | 14-5-0 (1 NC) | 2019-06-01 |
| Nick Maximov | 8-2-0 | 2022-10-15 |
| Nick Osipczak | 6-3-0 | 2010-11-13 |
| Nick Pace | 8-3-0 | 2011-11-19 |
| Nick Penner | 11-3-0 | 2012-12-14 |
| Nick Ring | 14-4-0 | 2013-12-06 |
| Nick Roehrick | 7-1-0 | 2017-07-07 |
| Nick Sanzo | 1-1-0 | 1997-02-07 |
| Nick Serra | 7-3-0 | 2002-06-22 |
| Nick Thompson | 38-14-1 | 2006-04-15 |
| Nicolae Negumereanu | 13-2-0 | 2022-11-12 |
| Nik Lentz | 30-12-2 (1 NC) | 2021-01-23 |
| Niklas Backstrom | 11-3-0 (1 NC) | 2015-06-20 |
| Niklas Stolze | 12-6-0 | 2022-06-04 |
| Nina Nunes | 11-7-0 | 2022-08-13 |
| Nissen Osterneck | 12-4-0 | 2009-04-01 |