| Fighter | Record | Last Bout |
|---|---|---|
| Godofredo Pepey | 13-6-0 | 2018-01-27 |
| Gokhan Saki | 1-2-0 | 2018-07-07 |
| Gokhan Saricam | 12-2-0 | 2026-04-18 |
| Goran Reljic | 15-8-0 | 2010-11-13 |
| Grant Dawson | 24-3-1 | 2026-10-24 |
| Gray Maynard | 13-7-1 (1 NC) | 2018-10-06 |
| Greg Hardy | 7-5-0 (1 NC) | 2022-03-05 |
| Greg Soto | 9-4-0 | 2011-01-01 |
| Greg Stott | 0-1-0 | 1997-10-17 |
| Gregor Gillespie | 14-1-0 | 2021-05-08 |
| Gregory Rodrigues | 20-6-0 | 2026-08-22 |
| Grigory Popov | 13-3-0 | 2019-11-09 |
| Guangyou Ning | 5-4-1 | 2016-11-26 |
| Guido Cannetti | 10-8-0 | 2023-03-11 |
| Guilherme Pat | 6-2-0 | 2026-08-08 |
| Guilherme Vasconcelos | 9-4-0 | 2014-07-05 |
| Gunnar Nelson | 19-6-1 | 2025-03-22 |
| Guram Kutateladze | 13-5-0 | 2025-03-22 |
| Gustavo Lopez | 12-6-1 | 2021-09-18 |
| Guto Inocente | 7-4-0 | 2014-11-07 |
| Guy Mezger | 30-14-2 | 1999-03-05 |
| Hannah Goldy | 6-4-0 | 2023-09-23 |
| He-Man Gipson | 1-2-0 | 1995-07-14 |
| Horacio Gutierrez | 4-3-0 | 2016-08-06 |
| Hyun Gyu Lim | 13-7-1 | 2017-09-22 |
| Ian Machado Garry | 17-2-0 | 2026-08-15 |
| James Giboo | 13-5-0 | 2008-07-19 |
| Jared Gooden | 23-10-0 | 2024-10-12 |
| Jared Gordon | 21-9-0 (1 NC) | 2026-05-09 |
| Jason Gilliam | 14-9-0 | 2007-07-07 |
| Jason Godsey | 16-16-0 | 1999-09-24 |
| Jason Gonzalez | 11-5-0 | 2019-04-27 |
| Joe Giannetti | 6-1-0 | 2018-07-06 |
| Joey Gambino | 9-2-0 | 2012-10-13 |
| Joey Gilbert | 2-3-0 | 2001-05-04 |
| Joey Gomez | 6-2-0 | 2016-09-17 |
| John Garza | 6-2-0 | 2026-07-11 |
| John Gunderson | 35-16-2 | 2010-09-15 |
| John Gunther | 5-1-0 | 2018-11-10 |
| Jonathan Goulet | 23-12-0 (1 NC) | 2010-05-08 |
| Jordan Griffin | 18-9-0 | 2021-04-10 |
| Jorge Gurgel | 14-10-0 | 2008-11-15 |
| Joseph Gigliotti | 7-2-0 | 2016-12-09 |
| Josh Grispi | 14-5-0 | 2013-02-16 |
| Justin Gaethje | 28-5-0 | 2026-06-14 |
| Karine Gevorgyan | 3-3-0 | 2017-12-01 |
| Kelvin Gastelum | 21-11-0 (1 NC) | 2026-04-11 |
| Kendall Grove | 23-17-0 (1 NC) | 2011-05-28 |
| King Green | 36-17-1 (1 NC) | 2026-10-03 |
| Kron Gracie | 5-3-0 | 2024-12-07 |