Recurring characters

This is the list of recurring characters on 24 who appeared (or were heard) live in two or more episodes of a season.

The total number of each character's appearances is included per season, regardless of whatever credits the actor may have received or if the actor or body double was uncredited. Characters who have appeared in multiple seasons have their grand total calculated in the final section. As with the appearances templates on each character's page, non-live audio, prerecorded footage, and photographs are excluded.

Season 1

 * For specific episode appearances, see Character appearances

Season 2

 * For specific episode appearances, see Character appearances

Season 3

 * For specific episode appearances, see Character appearances

Season 4

 * For specific episode appearances, see Character appearances

Season 5

 * For specific episode appearances, see Character appearances

Season 6

 * For specific episode appearances, see Character appearances

Season 7 (and Redemption)

 * For specific episode appearances, see Character appearances

Season 8

 * For specific episode appearances, see Character appearances

Multiple seasons
These characters recurred in multiple seasons. Their episode grand total is included up to "Day 8: 10:00am-11:00am." The special prequel production 24: Redemption is considered a part of Season 7 and currently does not affect the count. Included here are characters like Mark Kanar, who recurred in multiple seasons but did not appear in more than one episode per season.