| Fighter | Record | Last Bout |
|---|---|---|
| Chris Wilson | 18-10-0 (1 NC) | 2009-09-16 |
| Chris de la Rocha | 5-3-0 | 2018-12-15 |
| Christian Aguilera | 14-8-0 | 2021-05-08 |
| Christian Colombo | 8-3-1 | 2017-10-28 |
| Christian Edwards | 8-5-0 | 2026-09-26 |
| Christian Leroy Duncan | 15-2-0 | 2026-10-10 |
| Christian Morecraft | 8-3-0 | 2012-01-20 |
| Christian Rodriguez | 13-4-0 | 2026-06-20 |
| Christian Wellisch | 8-5-0 | 2009-01-31 |
| Christina Marks | 8-9-0 | 2017-12-01 |
| Christophe Leninger | 3-4-0 | 1997-05-30 |
| Christos Giagos | 20-12-0 | 2024-04-06 |
| Chuck Liddell | 21-8-0 | 2010-06-12 |
| Chuck O'Neil | 17-9-0 | 2011-06-04 |
| Cindy Dandois | 8-3-0 | 2017-04-22 |
| Ciryl Gane | 14-2-0 (1 NC) | 2026-06-14 |
| Claude Patrick | 14-2-0 | 2011-12-10 |
| Claudia Gadelha | 18-5-0 | 2020-11-07 |
| Claudio Puelles | 13-5-0 | 2025-09-13 |
| Claudio Ribeiro | 11-5-0 | 2024-03-02 |
| Claudio Silva | 14-4-0 | 2022-07-23 |
| Clay Collard | 14-7-0 (1 NC) | 2015-09-05 |
| Clay Guida | 38-22-0 | 2024-12-07 |
| Clay Harvison | 13-6-0 | 2011-11-12 |
| Clayton Carpenter | 8-3-0 | 2026-05-09 |
| Clifford Starks | 13-3-0 | 2013-04-20 |
| Clint Hester | 11-6-0 | 2016-04-23 |
| Cody Brundage | 12-9-1 (1 NC) | 2026-05-16 |
| Cody Donovan | 8-5-0 | 2014-07-19 |
| Cody Durden | 18-11-1 | 2026-07-11 |
| Cody East | 12-3-0 | 2016-10-01 |
| Cody Garbrandt | 15-8-0 | 2026-07-11 |
| Cody Gibson | 22-13-0 | 2026-07-25 |
| Cody Haddon | 9-1-0 | 2026-05-30 |
| Cody McKenzie | 16-10-0 | 2013-12-14 |
| Cody Pfister | 13-6-1 | 2016-07-13 |
| Cody Stamann | 21-8-1 | 2024-11-09 |
| Colby Covington | 17-5-0 | 2024-12-14 |
| Colby Thicknesse | 9-1-0 | 2026-05-02 |
| Cole Escovedo | 17-9-0 | 2011-11-12 |
| Cole Miller | 21-11-0 (1 NC) | 2016-12-17 |
| Cole Smith | 7-2-0 | 2020-09-05 |
| Cole Williams | 11-3-0 | 2020-10-31 |
| Colin Fletcher | 14-8-0 | 2013-03-16 |
| Colin Robinson | 10-12-0 | 2008-01-19 |
| Collin Anglin | 8-3-0 | 2021-11-13 |
| Collin Hart | 6-3-1 | 2013-04-13 |
| Colton Smith | 7-4-0 | 2014-06-28 |
| Connor Matthews | 7-4-0 | 2025-05-17 |
| Conor McGregor | 22-7-0 | 2026-07-11 |