| Fighter | Record | Last Bout |
|---|---|---|
| HyunSung Park | 10-2-0 | 2025-10-18 |
| Ian Heinisch | 14-5-0 | 2021-07-24 |
| Jack Hermansson | 24-10-0 | 2025-11-22 |
| Jai Herbert | 14-6-1 | 2026-04-18 |
| Jake Hadley | 11-4-0 | 2024-10-19 |
| Jake Hecht | 11-4-0 | 2012-06-08 |
| Jamahal Hill | 12-4-0 (1 NC) | 2025-06-21 |
| James Hammortree | 6-3-0 | 2010-06-19 |
| James Head | 9-4-0 | 2013-08-28 |
| James Te Huna | 16-9-0 | 2016-03-19 |
| Jamey-Lyn Horth | 9-3-0 | 2026-10-17 |
| Jared Hamman | 14-6-0 | 2013-08-31 |
| Jason High | 21-6-0 | 2014-06-07 |
| Jay Hieron | 23-7-0 | 2013-02-02 |
| Jeff Hougland | 10-6-0 | 2012-11-10 |
| Jeff Hughes | 10-4-0 (1 NC) | 2020-09-26 |
| Jeremy Horn | 91-22-5 (1 NC) | 2009-01-17 |
| Jimy Hettes | 11-3-0 | 2015-04-18 |
| John Halverson | 16-8-0 (1 NC) | 2008-03-01 |
| John Hathaway | 17-2-0 | 2014-03-01 |
| John Howard | 24-13-0 | 2015-12-10 |
| Johny Hendricks | 18-8-0 | 2017-11-04 |
| Jon Hess | 1-1-0 | 1995-04-07 |
| Joseph Holmes | 8-4-0 | 2023-05-06 |
| Josh Haynes | 14-11-0 | 2007-04-07 |
| Josh Hendricks | 19-11-0 (1 NC) | 2008-11-15 |
| Josh Hokit | 10-0-0 | 2026-06-14 |
| Josiah Harrell | 11-1-0 | 2026-09-26 |
| Kay Hansen | 7-6-0 | 2022-04-09 |
| Kayla Harrison | 19-1-0 | 2025-06-07 |
| Keith Hackney | 2-2-0 | 1995-12-16 |
| Kevin Holland | 29-15-0 (1 NC) | 2026-04-11 |
| Kuniyoshi Hironaka | 23-9-0 | 2008-04-19 |
| Kurt Holobaugh | 22-10-0 (1 NC) | 2025-05-31 |
| Kwan Ho Kwak | 9-2-0 | 2017-06-17 |
| Kyoji Horiguchi | 36-6-0 (1 NC) | 2026-06-20 |
| Kyung Ho Kang | 19-11-0 (1 NC) | 2024-06-22 |
| Luis Henrique | 10-5-0 (1 NC) | 2018-09-22 |
| Marcin Held | 23-7-0 | 2017-10-21 |
| Mark Hall | 5-6-0 | 1996-12-07 |
| Mark Holst | 12-6-0 | 2010-10-16 |
| Mark Hominick | 20-12-0 | 2012-11-17 |
| Mark Hughes | 6-2-0 | 2000-11-17 |
| Mark Hunt | 13-14-1 (1 NC) | 2018-12-01 |
| Matt Hamill | 12-8-0 | 2013-10-09 |
| Matt Hobar | 9-3-0 | 2014-12-06 |
| Matt Horwich | 30-25-1 | 2009-04-01 |
| Matt Hughes | 45-9-0 | 2011-09-24 |
| Max Holloway | 28-9-0 | 2026-07-11 |
| Mizuto Hirota | 18-10-2 | 2018-12-01 |