| Fighter | Record | Last Bout |
|---|---|---|
| Akihiro Gono | 35-21-8 | 2009-01-31 |
| Alex Garcia | 15-6-0 | 2018-10-27 |
| Alex Gorgees | 6-1-0 | 2018-12-01 |
| Alexander Gustafsson | 18-8-0 | 2022-07-23 |
| Allan Goes | 10-5-2 | 1998-05-15 |
| Andre Gusmao | 6-3-0 | 2009-05-23 |
| Azamat Gashimov | 8-3-0 | 2013-05-18 |
| Bob Gilstrap | 5-7-0 | 1998-05-15 |
| Brad Gumm | 10-6-1 (1 NC) | 2000-09-22 |
| Brian Gassaway | 29-20-2 (1 NC) | 2005-08-20 |
| Brian Geraghty | 26-18-1 | 2007-06-23 |
| Chad Griggs | 11-3-0 | 2012-11-17 |
| Charalampos Grigoriou | 8-5-0 | 2024-08-10 |
| Chase Gormley | 14-6-0 (1 NC) | 2010-03-21 |
| Chris Gruetzemacher | 15-5-0 | 2021-12-04 |
| Christos Giagos | 20-12-0 | 2024-04-06 |
| Claudia Gadelha | 18-5-0 | 2020-11-07 |
| Damian Grabowski | 20-5-0 | 2017-07-22 |
| Darrel Gholar | 5-6-0 | 1999-01-08 |
| Dave Galera | 5-1-0 | 2014-01-04 |
| Desmond Green | 23-8-0 | 2019-05-18 |
| Dwight Grant | 11-6-0 | 2022-07-16 |
| Eddie Gordon | 8-4-0 | 2015-06-27 |
| Edgar Garcia | 14-5-0 | 2016-01-02 |
| Eduardo Garagorri | 13-2-0 | 2020-11-07 |
| Elias Garcia | 6-2-0 | 2018-12-01 |
| Erick Gonzalez | 14-8-0 | 2023-02-25 |
| Fabio Gurgel | 3-2-0 | 1996-09-20 |
| Fernie Garcia | 10-5-0 | 2024-02-10 |
| Forrest Griffin | 19-7-0 | 2012-07-07 |
| Gabe Ruediger | 18-8-0 | 2011-02-05 |
| Gabriel Benitez | 23-13-0 | 2024-04-27 |
| Gabriel Gonzaga | 17-11-0 | 2016-04-10 |
| Gabriel Silva | 8-2-0 | 2020-02-29 |
| 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 |
| Gary Goodridge | 23-22-1 | 1999-03-05 |
| Gasan Umalatov | 17-4-2 | 2015-11-07 |
| 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 |
| George Roop | 15-13-1 | 2015-09-26 |
| George Sotiropoulos | 14-7-0 | 2013-10-19 |