C
- Billy Campbell
- Ron Canada
- Richard Cansino
- Seymour Cassel
- Juliet Cesario
- Rosalind Chao
- Lanei Chapman
- Gabriel Chavez (Latin American dub: additional voices)
- Shannon Cochran
- George Coe
- Christopher Collins
- Rickey D'Shon Collins
- Jesse Conde (Latin American dub: additional voices)
- John P. Connolly
- Kevin Conway (actor)
- Charles Cooper (actor)
- Robert Costanzo
- Ward Costello
- Nicolas Coster
- Nikki Cox
- Ronny Cox
- Leonard Crofoot
- James Cromwell
- Denise Crosby
- Melinda Culea
- Robin Curtis
Read more about this topic: List Of Star Trek: The Next Generation Cast Members