| Fighter | Record | Last Bout |
|---|---|---|
| Kit Cope | 6-7-0 | 2005-11-05 |
| Larry Cureton | 0-2-0 | 1995-09-08 |
| Laverne Clark | 27-21-1 | 2000-09-22 |
| Liz Carmouche | 13-7-0 | 2019-08-10 |
| Logan Clark | 18-6-0 | 2006-12-13 |
| Louis Cosce | 7-2-0 | 2022-09-17 |
| Luan Chagas | 15-3-1 | 2018-04-21 |
| Luiz Cane | 17-7-0 (1 NC) | 2012-10-13 |
| Luke Caudillo | 17-17-0 | 2007-11-17 |
| Luke Cummo | 6-6-0 | 2008-08-09 |
| Magnus Cedenblad | 14-5-0 | 2016-11-19 |
| Marcio Cruz | 8-3-0 | 2006-12-30 |
| Mark Coleman | 16-10-0 | 2010-02-06 |
| Mike Ciesnolevicz | 19-4-0 (1 NC) | 2009-06-20 |
| Misha Cirkunov | 15-9-0 | 2022-10-15 |
| Mitch Clarke | 11-5-0 | 2017-09-09 |
| Nathan Coy | 15-7-0 | 2017-04-15 |
| Nick Catone | 10-4-0 | 2014-02-01 |
| Orion Cosce | 8-2-0 | 2023-05-20 |
| Patrick Cote | 23-11-0 | 2017-04-08 |
| Patrick Cummins | 10-7-0 | 2019-05-18 |
| Paul Creighton | 3-1-0 | 2002-05-10 |
| Rafael Carino | 2-1-1 | 1996-05-17 |
| Rafael Cavalcante | 12-7-0 (1 NC) | 2016-02-06 |
| Randy Costa | 6-4-0 | 2022-10-01 |
| Randy Couture | 19-11-0 | 2011-04-30 |
| Rashad Coulter | 9-4-0 | 2018-11-24 |
| Rich Clementi | 45-23-1 | 2009-02-07 |
| Richard Crunkilton | 19-4-0 | 2003-04-25 |
| Roan Carneiro | 21-11-0 | 2017-02-11 |
| Ron van Clief | 0-1-0 | 1994-12-16 |
| Ryan Couture | 11-5-0 | 2013-08-31 |
| Ryo Chonan | 22-13-0 | 2009-04-18 |
| Sako Chivitchian | 8-1-0 | 2010-12-04 |
| SeungGuk Choi | 7-3-0 | 2023-02-04 |
| Shane Campbell | 14-6-0 | 2016-08-27 |
| Shane Carwin | 12-2-0 | 2011-06-11 |
| Shonie Carter | 51-31-7 (1 NC) | 2006-12-13 |
| Spike Carlyle | 9-3-0 | 2020-11-28 |
| Steve Cantwell | 7-6-0 | 2012-02-25 |
| Tim Credeur | 12-4-0 | 2011-06-04 |
| Tristan Connelly | 14-8-0 | 2022-04-30 |
| Vince Cachero | 7-4-0 | 2021-02-27 |
| Wagner Campos | 12-10-0 | 2012-06-23 |
| Wes Combs | 20-6-0 | 2006-08-26 |
| Wesley Correira | 20-16-0 | 2004-04-02 |
| Will Campuzano | 14-6-0 | 2014-03-15 |
| Will Chope | 34-13-0 | 2014-01-04 |
| Yan Cabral | 13-3-0 | 2016-05-08 |
| Yorgan De Castro | 6-3-0 | 2021-04-10 |