| Fighter | Record | Last Bout |
|---|---|---|
| Alex Hunter | 2-0-0 | 1997-10-17 |
| Alvaro Herrera Mendoza | 9-6-0 | 2018-07-28 |
| Andrew Holbrook | 12-3-0 | 2017-09-02 |
| Anthony Hamilton | 15-9-0 | 2017-11-18 |
| Antoni Hardonk | 8-6-0 | 2009-10-24 |
| Barb Honchak | 10-4-0 | 2018-07-06 |
| Benson Henderson | 24-7-0 | 2015-11-28 |
| Bobby Hoffman | 36-10-1 (2 NC) | 2001-11-02 |
| Branden Lee Hinkle | 17-11-0 (1 NC) | 2006-06-28 |
| Brian Houston | 4-6-0 | 2014-01-15 |
| Carlos Huachin | 10-5-1 | 2019-09-21 |
| Chris Haseman | 20-17-0 | 2002-07-13 |
| Chris Heatherly | 9-4-0 (1 NC) | 2014-11-15 |
| Chris Holdsworth | 6-0-0 | 2014-05-24 |
| Clay Harvison | 13-6-0 | 2011-11-12 |
| Clint Hester | 11-6-0 | 2016-04-23 |
| Collin Hart | 6-3-1 | 2013-04-13 |
| Corey Hill | 6-9-0 | 2008-12-10 |
| Cory Hendricks | 3-1-0 | 2016-07-08 |
| Dale Hartt | 6-3-0 | 2009-06-13 |
| Dan Hardy | 25-10-0 (1 NC) | 2012-09-29 |
| Dan Henderson | 32-15-0 | 2016-10-08 |
| Danny Henry | 12-4-0 | 2020-07-11 |
| Darrell Horcher | 13-4-0 | 2018-11-30 |
| Dave Herman | 22-6-0 | 2013-07-06 |
| David Heath | 18-7-0 | 2008-02-02 |
| David Hood | 1-3-0 | 1995-09-08 |
| Delson Heleno | 29-10-0 | 2012-06-23 |
| Dennis Hallman | 53-20-2 (1 NC) | 2011-12-10 |
| Dong Hyun Kim | 22-4-1 (1 NC) | 2017-06-17 |
| Dong Hyun Ma | 16-11-3 | 2019-12-21 |
| Dustin Hazelett | 12-7-0 | 2010-12-11 |
| Ed Herman | 27-16-0 (1 NC) | 2023-04-15 |
| 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 |
| Hakeem Dawodu | 13-4-1 | 2023-08-12 |
| 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 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 |