| Fighter | Record | Last Bout |
|---|---|---|
| Felice Herrig | 14-10-0 | 2022-06-04 |
| Frank Hamaker | 1-0-0 | 1994-03-11 |
| Geane Herrera | 9-3-0 | 2016-11-26 |
| Gerald Harris | 23-5-0 | 2010-11-20 |
| Gerry Harris | 1-4-0 | 1995-09-08 |
| Greg Hardy | 7-5-0 (1 NC) | 2022-03-05 |
| Hacran Dias | 23-6-1 | 2017-10-28 |
| Hailey Cowan | 7-6-0 | 2026-08-01 |
| Hakeem Dawodu | 13-4-1 | 2023-08-12 |
| Hamdy Abdelwahab | 7-1-0 (1 NC) | 2025-10-25 |
| Hannah Cifers | 10-7-0 | 2020-08-29 |
| Hannah Goldy | 6-4-0 | 2023-09-23 |
| Hans Stringer | 22-8-3 | 2015-07-18 |
| Harold Howard | 1-3-0 | 1995-09-08 |
| Harry Hardwick | 13-5-1 | 2026-03-14 |
| Harry Hunsucker | 7-6-0 | 2022-08-20 |
| Harry Moskowitz | 6-12-0 | 1998-05-15 |
| Hatsu Hioki | 29-10-2 | 2015-05-09 |
| Hayato Sakurai | 38-13-2 | 2002-03-22 |
| Hayder Hassan | 6-3-0 | 2015-12-19 |
| He-Man Gipson | 1-2-0 | 1995-07-14 |
| Heath Herring | 28-16-0 (1 NC) | 2008-08-09 |
| Heather Clark | 7-6-0 | 2016-11-05 |
| Hecher Sosa | 15-1-0 | 2026-03-14 |
| Hector Aldana | 4-3-0 | 2019-10-12 |
| Hector Lombard | 34-10-1 (2 NC) | 2018-09-22 |
| Hector Ramirez | 10-6-1 | 2007-06-16 |
| Hector Sandoval | 14-4-0 | 2017-08-05 |
| Hector Santiago | 7-1-0 | 2026-08-29 |
| Hector Urbina | 17-10-1 | 2016-09-24 |
| Henrique da Silva | 14-5-0 | 2017-09-22 |
| Henry Briones | 16-8-1 | 2018-05-19 |
| Henry Cejudo | 16-6-0 | 2025-12-06 |
| Henry Martinez | 9-4-0 | 2012-12-08 |
| Herbert Burns | 11-6-0 | 2024-08-17 |
| Hermes Franca | 24-17-0 (1 NC) | 2009-09-19 |
| Hernani Perpetuo | 18-5-0 (1 NC) | 2014-07-26 |
| Holly Holm | 15-7-0 (1 NC) | 2024-04-13 |
| Homer Moore | 26-9-2 | 2001-11-02 |
| Horacio Gutierrez | 4-3-0 | 2016-08-06 |
| Houston Alexander | 17-15-1 (2 NC) | 2009-12-05 |
| Houston Dorr | 1-2-0 | 1997-10-17 |
| Hu Yaozong | 3-3-0 | 2021-10-30 |
| Hugo Duarte | 6-3-0 | 1998-05-15 |
| Hugo Viana | 8-4-0 | 2015-08-01 |
| Humberto Bandenay | 14-7-0 (1 NC) | 2019-08-10 |
| Humberto Brown Morrison | 4-6-0 | 2014-11-15 |
| Hunter Azure | 9-2-0 | 2021-04-10 |
| Hyder Amil | 11-3-0 | 2026-06-20 |
| Hyun Gyu Lim | 13-7-1 | 2017-09-22 |