| Fighter | Record | Last Bout |
|---|---|---|
| Gabriel Santos | 12-2-0 | 2025-02-08 |
| Gabriel Silva | 8-2-0 | 2020-02-29 |
| Gabriella Fernandes | 11-4-0 | 2026-03-28 |
| Gadzhi Omargadzhiev | 13-2-0 | 2022-10-22 |
| Gadzhimurad Antigulov | 20-8-0 | 2020-10-17 |
| Gaetano Pirrello | 15-7-1 | 2021-10-02 |
| Galore Bofando | 5-3-0 | 2017-12-16 |
| Gan McGee | 13-5-0 | 2003-09-26 |
| Garett Whiteley | 7-3-0 | 2014-12-13 |
| Garreth McLellan | 13-6-0 | 2017-03-11 |
| Garrett Armfield | 10-5-0 | 2024-11-02 |
| Gary Goodridge | 23-22-1 | 1999-03-05 |
| Gasan Umalatov | 17-4-2 | 2015-11-07 |
| Gaston Bolanos | 9-5-0 | 2026-06-20 |
| Gauge Young | 11-4-0 | 2026-08-22 |
| Gavin Tucker | 13-3-0 | 2023-08-05 |
| Geane Herrera | 9-3-0 | 2016-11-26 |
| Gegard Mousasi | 42-6-2 | 2017-04-08 |
| Genaro Valdez | 10-3-0 | 2023-07-15 |
| Genki Sudo | 15-4-2 | 2004-04-02 |
| Geoff Neal | 16-8-0 | 2026-02-21 |
| George Roop | 15-13-1 | 2015-09-26 |
| George Sotiropoulos | 14-7-0 | 2013-10-19 |
| George Sullivan | 17-7-0 (1 NC) | 2018-08-25 |
| Georges St-Pierre | 26-2-0 | 2017-11-04 |
| Gerald Harris | 23-5-0 | 2010-11-20 |
| Gerald Meerschaert | 37-22-0 | 2026-05-02 |
| Gerald Strebendt | 9-7-0 | 2003-09-26 |
| Geraldo de Freitas | 12-6-0 | 2020-11-14 |
| Germaine de Randamie | 10-5-0 | 2024-04-06 |
| Gerry Harris | 1-4-0 | 1995-09-08 |
| Geza Kalman | 4-9-0 | 1996-07-12 |
| Gian Villante | 17-14-0 | 2021-11-06 |
| Gianni Vazquez | 14-6-1 | 2026-08-08 |
| Gideon Ray | 17-15-1 | 2006-11-11 |
| Giga Chikadze | 15-6-0 | 2026-09-19 |
| Gigi Canuto | 7-2-0 | 2026-08-08 |
| Gil Castillo | 8-5-0 | 2002-11-22 |
| Gilbert Aldana | 6-2-0 | 2006-07-08 |
| Gilbert Burns | 22-10-0 | 2026-04-18 |
| Gilbert Melendez | 22-8-0 | 2019-07-06 |
| Gilbert Smith | 12-6-0 | 2013-04-13 |
| Gilbert Urbina | 8-5-0 | 2026-10-17 |
| Gilbert Yvel | 39-16-1 (1 NC) | 2010-10-23 |
| Gillian Robertson | 17-9-0 | 2026-08-15 |
| Gina Mazany | 7-6-0 | 2022-04-30 |
| Glaico Franca Moreira | 15-5-0 | 2016-09-24 |
| Gleison Tibau | 33-14-0 | 2018-06-01 |
| Gloria de Paula | 6-5-0 | 2022-06-18 |
| Glover Teixeira | 33-9-0 | 2023-01-21 |