This category lists characters appearing or mentioned in 24 that are directly based on real people. Generally, these characters are only mentioned in dialogue, with a few notable exceptions:
- Real news anchors appear as fictionalized versions of themselves, including Rick Garcia, Bob Beckel, and Heather Nauert
- Abdul Rahman Yasin, a terrorist involved in the 1993 World Trade Center bombing, appears in person as one of the main antagonists in 24 Declassified: Trinity
- Pope John Paul II also appears in person in the novel 24 Declassified: Trinity.
- Former Serbian president Slobodan Milošević appears briefly in a television broadcast alongside Victor Drazen in 24: Nightfall
The articles in this category are strictly limited to information that can be gained in the episodes or other media in which they are referenced. In addition, the character's real status, living or deceased, can be listed in the character sidebar. Any discussion of their real-world significance is allowed only in the "Background notes and information" section.