| Sami Gayle | ... | Nicky Reagan-Boyle (27 episodes) |
| Abigail Hawk | ... | Detective Melissa Baker (23 episodes) |
| Gregory Jbara | ... | Garrett Moore (10 episodes) |
| Bruce Altman | ... | Mayor Frank Russo (9 episodes) |
| Alex Ziwak | ... | Undercover Detective (9 episodes) |
| Robert Clohessy | ... | Sgt. Gormley (8 episodes) |
| Peter Conboy | ... | NYPD Crime Tech (8 episodes) |
| Dylan Moore | ... | Sydney Davenport (6 episodes) |
| Andrea Roth | ... | Kelly Davidson (5 episodes) |
| Colleen Clinton | ... | Agent Anderson (4 episodes) |
| Yvonna Kopacz Wright | ... | Ava Hotchkiss (4 episodes) |
| Scott Churchson | ... | Officer at Funeral (4 episodes) |
| James Schram | ... | The Bar Regular (4 episodes) |
| Nick Sandow | ... | Lt. Bello (4 episodes) |
| Michael T. Weiss | ... | Sonny Malevsky (4 episodes) |
| Derek Hedlund | ... | Officer Wilson (4 episodes) |
| Greg Paul | ... | Undercover Cop (4 episodes) |
| James Nuciforo | ... | Jim (3 episodes) |
| Rey Lucas | ... | Dia Noticias Reporter (3 episodes) |
| Elli | ... | Rabbi Elli (3 episodes) |
| Liz Logan | ... | Dominican Woman (3 episodes) |
| Peter Riga | ... | Man on Street (3 episodes) |
| Robert John Burke | ... | Jyle Hogan (3 episodes) |
| Mike Catapano | ... | Detective (3 episodes) |
| Bobby Cannavale | ... | Charles Rosselini (3 episodes) |
| Patricia Kalember | ... | Dr. Keller (3 episodes) |
| Luis Ayala | ... | Bar Patron (3 episodes) |
| Noelle Beck | ... | Sue Connors (3 episodes) |
| Mike Houston | ... | Uniform (3 episodes) |
| Gameela Wright | ... | Reporter (3 episodes) |
| Eric Morris | ... | Noble Sanfino (3 episodes) |
| David Ramsey | ... | Mayor Carter Poole (3 episodes) |
| Victor Cruz | ... | Tech (3 episodes) |
| Frederick Weller | ... | Jacob Krystal (3 episodes) |
| DTeflon | ... | Derrick Ling (2 episodes) |
| Jennifer Butler | ... | Detective (2 episodes) |
| Mousa Kraish | ... | Khalid Hassan (2 episodes) |
| Haas Manning | ... | Jason (2 episodes) |
| Steven Weisz | ... | Court Officer (2 episodes) |
| James Colby | ... | Walter Ryder (2 episodes) |