| King Calder | 'Assault' as King Croxton |
| Olive Carey | 'Shivaree' as Ma Wilson |
| Philip Carey | 'Death Trap' as Simon Battle |
| Benny Carle | 'The Assailant' as Amos Blaine |
| Thom Carney | 'Lou Mallory' as Moss Jackman |
| Carleton Carpenter | 'The Coward' as George Collins |
| John Carpenter | 'Nora' as the stagecoach driver |
| Jimmy Carter | 'Gun Shy' as Charlie |
| Penelope Sue Carver | 'The Pet' little girl who died from anthrax |
| Allen Case | 'The Young Englishman' as Jeremy Ashford |
| Malcolm Cassell | 'The Spoiler' as Joey Merrick |
| William (Bill) Catching | 'The Second Witness" as Tom Williamson |
| Lincoln Cemyan | 'The Lonesome Bride' as Kelly Banner |
| Bill Cerone | 'Guilty Conscience' as Mortimer the one who frisk Micah in the saloon |
Robert Chadwick | 'The Indian' as Eskaminzan |
| Larry Chance | 'The Mescalero Curse' as Lobo |
| John Davis Chandler | 'The Executioner' as Brooks |
| Lon Chaney Jr. | 'Gunfire' as Charlie Gordo |
| Kim Charney | 'The Angry Man' as Carey MacDonald |
| Alden ‘Stephen’ Chase | 'The Sheridan Story' as Medical Col. Stroud |
| Pat Close | 'The Queue' as Noah Fergus |
Pamela Cole | 'The Schoolmaster' as Sally |
John Collier | 'Smoke Screen' as Howie |
Booth Coleman | 'The High Country' as Jeremiah |
Al Collins | 'Sporting Chance' - Millie calls him Al Collins - that is his real name - take a look at the credits - his name was suppose to be Pete |
| Kevin Connors | 'The Schoolmaster' |
| Steve Connors | 'The Schoolmaster' |
Charles Conrad | 'The Spiked Rifle' as Mallory |
Steve Conte | 'Lariat' as Doyle Black |
Roberto Contreras | 'The Vaqueros' as Angelo |
Tommy Cook | 'Sheer Terror' as Andy Carr |
Ben Cooper | 'Face of Yesterday' as Simon Lee |
| Clancy Cooper | 'The Raid' as Caleich |
| Robert Cornthwaite | 'The Deserter' as Major Dammler |
| Jerome Courtland | 'The Brother-in-law' as Johnny Gibbs |
Kay Cousins (Johnson) | 'The Boarding House' as Flo |
| Carolyn Craig | 'End of a Young Gun' as Ann Bard |
| John Craig | 'Which Way Did They Go?' as Bo Jackman |