| Keith Carradine | ... | President Conrad Dalton (6 episodes) |
| Wallis Currie-Wood | ... | Stephanie 'Stevie' McCord (6 episodes) |
| Sebastian Arcelus | ... | Jay Whitman (4 episodes) |
| Marin Hinkle | ... | Isabelle (4 episodes) |
| Nilaja Sun | ... | Juliet (3 episodes) |
| Michael Simon Hall | ... | Dept of State Advisor (2 episodes) |
| George Pendill | ... | Chairman of the JCOS (2 episodes) |
| Darren Whitfield | ... | Reporter
(2 episodes) |
| Anna Wood | ... | Sarah Eckhart (2 episodes) |
| William Sadler | ... | George (1 episode) |
| Michael Aronov | ... | Anton Durchenko (1 episode) |
| Ato Essandoh | ... | King Nungunde (1 episode) |
| Mozhan Marnò | ... | Roxanne Majidi (1 episode) |
| Mike Pniewski | ... | Gordon Becker (1 episode) |
| Jordan Baker | ... | Susan Cole (1 episode) |
| Kevin Kilner | ... | Robert Cole (1 episode) |
| Scott Lindley | ... | Ethan Cole (1 episode) |
| Sean Kleier | ... | Tyler Cole (1 episode) |
| Stevie Steel | ... | Gillian (1 episode) |
| Eshan Bay | ... | Jake (1 episode) |
| Suzanne Erickson | ... | Tourist (1 episode) |
| Michael Feldman | ... | Talking Head (1 episode) |
| Kenya Brome | ... | Midjaha Nungunde (1 episode) |
| Julie Chen | ... | Julie Chen (1 episode) |
| Kabir Chopra | ... | Guard
(1 episode) |
| Chris Conlon | ... | Tourist
(1 episode) |
| Sara Gilbert | ... | Sara Gilbert (1 episode) |
| Efraiem Hanna | ... | Guard
(1 episode) |
| Keith Mackler | ... | College Student
(1 episode) |
| Gil Quinones | ... | Protester
(1 episode) |
| Zariah Singletary | ... | African Refugee (1 episode) |
| Aisha Tyler | ... | Aisha Tyler (1 episode) |
| Sheryl Underwood | ... | Sheryl Underwood (1 episode) |
| Marla Aaron Wapner | ... | News Reporter
(1 episode) |
| Tim Guinee | ... | Paul Wellington (1 episode) |
| John Bedford Lloyd | ... | Everard Burke (1 episode) |
| Leslie Silva | ... | Ms. Hardwick (1 episode) |
| Jeff Hephner | ... | Isaac Bishop (1 episode) |
| Megan Byrne | ... | Jessica Wellington (1 episode) |
| Paige Brady | ... | Susan Wellington (1 episode) |