| Fighter | Record | Last Bout |
|---|---|---|
| Lance Gibson | 4-5-0 | 2000-12-16 |
| Lance Gibson Jr. | 10-2-0 | 2026-03-28 |
| Leonard Garcia | 18-13-1 | 2013-04-27 |
| Leonardo Guimaraes | 11-5-0 (1 NC) | 2016-09-17 |
| Lewis Gonzalez | 11-3-0 | 2015-06-27 |
| Loopy Godinez | 14-6-0 | 2026-04-11 |
| Louis Gaudinot | 8-4-0 (1 NC) | 2015-01-03 |
| Luis Gurule | 11-4-0 | 2026-05-30 |
| Lyman Good | 21-6-0 (1 NC) | 2020-06-20 |
| Magomed Gadzhiyasulov | 9-1-0 | 2025-01-11 |
| Malcolm Gordon | 14-8-0 | 2024-01-20 |
| Manvel Gamburyan | 15-10-0 (1 NC) | 2016-11-19 |
| Marcelo Golm | 6-3-0 | 2019-04-20 |
| Marcelo Guimaraes | 9-2-1 | 2016-03-05 |
| Mark Godbeer | 13-4-0 | 2018-03-17 |
| Mateusz Gamrot | 26-5-0 (1 NC) | 2026-08-08 |
| Matt Grice | 15-5-0 | 2013-02-23 |
| Maurice Greene | 9-7-0 | 2021-05-08 |
| Max Gimenis | 6-2-0 | 2025-11-08 |
| Max Griffin | 20-13-0 | 2026-04-25 |
| Maxim Grishin | 32-10-2 | 2023-06-03 |
| Melissa Gatto | 9-3-2 | 2026-04-04 |
| Melvin Guillard | 32-18-2 (3 NC) | 2014-03-08 |
| Michael Graves | 6-0-1 | 2016-07-30 |
| Micheal Gillmore | 6-5-0 | 2022-02-26 |
| Mickey Gall | 7-7-0 | 2024-11-16 |
| Mike Grundy | 12-4-0 | 2022-03-19 |
| Mike Guymon | 15-6-1 | 2011-01-22 |
| Miranda Granger | 7-3-0 | 2022-08-06 |
| Mitch Gagnon | 12-5-0 | 2019-05-04 |
| Muin Gafurov | 20-7-0 | 2026-02-07 |
| Nandor Guelmino | 11-5-1 | 2013-09-21 |
| Neil Grove | 12-8-1 | 2009-02-21 |
| Noah Gugnon | 10-2-0 | 2026-08-01 |
| Pablo Garza | 12-4-0 | 2013-04-06 |
| Paul Georgieff | 6-2-0 | 2007-12-08 |
| Pearl Gonzalez | 6-3-0 | 2017-10-07 |
| Rafa Garcia | 19-4-0 | 2026-09-12 |
| Renzo Gracie | 13-7-1 (1 NC) | 2010-04-10 |
| Ricky Glenn | 22-9-2 | 2024-08-17 |
| Roger Gracie | 8-2-0 | 2013-07-06 |
| Rolles Gracie | 8-4-0 | 2010-02-06 |
| Royce Gracie | 15-2-3 | 2006-05-27 |
| Ryan Gandra | 10-1-0 | 2026-09-19 |
| Sean Gannon | 2-1-0 | 2005-10-07 |
| Shamil Gamzatov | 14-1-0 | 2021-10-30 |
| Shamil Gaziev | 15-3-0 | 2026-08-22 |
| Shannon Gugerty | 15-7-0 | 2010-03-21 |
| Sheila Gaff | 9-7-0 | 2013-08-03 |
| Silvana Gomez Juarez | 11-5-0 | 2022-11-12 |