Many actors on House have also appeared on Fox's 24, both in featured and minor roles.
Day 1[]
- Leslie Hope as Teri Bauer (all 24 episodes)
- Sarah Clarke as Nina Myers (all 24 episode)
- Željko Ivanek as Andre Drazen (15 episodes)
- Vicellous Shannon as Keith Palmer (12 episodes)
- Jude Ciccolella as Mike Novick (11 episodes)
- Sam Ayers as Jeff Breeher - 2:00 p.m. - 4:00 p.m. (2 episodes)
Day 2[]
- Jude Ciccolella as Mike Novick (19 episodes)
- Sarah Clarke as Nina Myers (6 episodes)
- Vicellous Shannon as Keith Palmer - 8:00 a.m. to 9:00 a.m.
- Skye McCole Bartusiak as Megan Matheson (8 episodes)
- Tracy Middendorf as Carla Matheson (4 episodes)
- Lilas Lane as Maggie - 7:00 a.m. to 8:00 a.m.
- Yareli Arizmendi as Karima Naiyeer - 1:00 p.m. to 2:00 p.m.
Day 3[]
- Sarah Clarke as Nina Myers (6 episodes)
- Mandy June Turpin as Heather (2 episodes)
- David Kelsey as CTU Forensics Agent - 3:00 a.m.-4:00 a.m.
Day 4[]
- Shohreh Aghdashloo as Dina Araz (12 episodes)
- Jude Ciccolella as Mike Novick (8 episodes)
- Leighton Meester as Debbie Pendleton - 8:00 a.m. to 12:00 p.m. (4 episodes)
- Brent Briscoe as Doug - 9:00 a.m. to 11:00 a.m. (2 episodes)
- Tina Holmes as Store Customer - 10:00 a.m. to 11:00 a.m.
- Alex Skuby as Sgt. Dennis McGrath - 10:00 a.m. to 11:00 a.m.
Day 5[]
- Jude Ciccolella as Mike Novick - 7 a.m. to 9 p.m and 12 a.m. to 7 a.m.
- Peter Weller as Christopher Henderson - 4 p.m. to 8 p.m., 9 p.m. to 2 a.m. and 4 a.m. to 6 a.m.
- Tracy Howe as Justin Adams - 1 a.m. to 3 a.m. and 4 a.m to 6 a.m.
- Carl Gilliard as Ron - 1 a.m. to 2 a.m. and 3 a.m. to 4 a.m.
- Stephanie Erb as Sue - 2 a.m. to 4 a.m.
Day 6[]
- Matt McKenzie as Agent Hollister (4 episodes)
- Harry Lennix as Walid Al-Rezani - 7 a.m. to 1 p.m.
- Kal Penn as Ahmed Amar - 6 a.m. to 10 a.m.
- Julie Quinn as Julie - 7 a.m. to 8 a.m.
Day 8[]
- Joel Bissonnette as Pavel Tokarev (4 episodes)
- D.B. Sweeney as Mark Bledsoe - 10:00 a.m.-12:00 p.m. (2 episodes)
- Ryan Alosio as Brian - 11:00 a.m. - 12:00 p.m.
- Sam Ayers as NYPD Officer - 4:00 p.m. - 5:00 p.m.
24: Legacy - The Raid[]
- Scott C. Roe as Philman
24: Legacy[]
- Charlie Hofheimer as Ben Grimes (7 episodes)
- Kevin Christy as David Harris (6 episodes)
- James DuMont as Jenkins - 5:00 p.m. - 6:00 p.m.
- Scott C. Roe as Philman - "The Raid"