| Fighter | Record | Last Bout |
|---|---|---|
| Cristiane Justino | 21-2-0 (1 NC) | 2019-07-27 |
| Cristiano Marcello | 13-6-0 | 2014-02-15 |
| Cristina Stanciu | 5-2-0 | 2016-07-13 |
| Cung Le | 9-3-0 | 2014-08-23 |
| Curt Warburton | 13-6-0 | 2011-06-26 |
| Curtis Millender | 17-5-0 | 2019-04-13 |
| Curtis Stout | 11-12-1 | 2004-06-19 |
| Cynthia Calvillo | 9-6-1 | 2023-04-08 |
| Cyril Asker | 9-4-0 | 2018-02-10 |
| Cyrille Diabate | 19-10-1 | 2014-03-08 |
| Dan Christison | 20-7-0 | 2006-07-08 |
| Dan Cramer | 11-4-0 | 2009-08-08 |
| Daniel Cormier | 22-3-0 (1 NC) | 2020-08-15 |
| Danny Castillo | 17-10-0 | 2015-12-19 |
| Danny Chavez | 11-5-1 | 2022-06-18 |
| Daron Cruickshank | 18-10-0 (1 NC) | 2016-01-17 |
| Devin Clark | 14-9-0 | 2024-02-10 |
| Dominick Cruz | 24-4-0 | 2022-08-13 |
| Donald Cerrone | 36-17-0 (2 NC) | 2022-07-02 |
| Donnie Chappell | 0-1-0 | 1997-07-27 |
| Dwayne Cason | 1-1-0 | 1997-10-17 |
| Ernest Chavez | 10-2-0 | 2014-10-04 |
| Fabio Cherant | 7-4-0 | 2022-02-12 |
| Fabricio Camoes | 14-9-1 | 2014-10-25 |
| Felipe Colares | 10-4-0 | 2022-05-21 |
| Francis Carmont | 25-12-0 | 2014-08-23 |
| Frank Camacho | 22-10-0 | 2022-05-14 |
| Frank Caracci | 2-3-0 | 1999-01-08 |
| Gil Castillo | 8-5-0 | 2002-11-22 |
| Guido Cannetti | 10-8-0 | 2023-03-11 |
| Hannah Cifers | 10-7-0 | 2020-08-29 |
| Heather Clark | 7-6-0 | 2016-11-05 |
| JC Cottrell | 17-5-0 | 2017-01-28 |
| Jake Collier | 13-10-0 | 2023-09-23 |
| Jay Cucciniello | 8-1-0 | 2018-07-06 |
| Jeff Cox | 10-7-0 | 2008-04-02 |
| Jeff Curran | 36-18-1 | 2012-05-15 |
| Jessica-Rose Clark | 11-9-0 (1 NC) | 2023-05-13 |
| Joachim Christensen | 14-6-0 | 2017-06-25 |
| Joe Charles | 6-13-0 | 1997-12-21 |
| John Campetella | 0-1-0 | 1996-07-12 |
| John Cholish | 8-3-0 | 2013-05-18 |
| John Cofer | 8-4-0 | 2012-12-15 |
| Johnny Case | 22-6-0 | 2017-06-25 |
| Josh Clopton | 6-2-1 | 2013-08-03 |
| Josh Copeland | 12-4-0 | 2015-03-14 |
| Josh Culibao | 11-4-1 | 2024-08-17 |
| Kailin Curran | 4-5-0 | 2017-11-25 |
| Kevin Casey | 9-5-2 (2 NC) | 2016-08-27 |
| Kevin Croom | 21-15-0 (1 NC) | 2022-04-16 |