A total of 47 actors have been credited as a part of the starring cast, over the course of eight seasons, one television movie and one miniseries. Some characters have their own pages see the box below. The list first names the actor, followed by the character.
The following is a list of characters in the American serial drama television series 24 and 24: Legacy by season and event. Kiefer Sutherland is the only actor to be a regular cast member in every season of 24.