Actors in both 9-1-1 and Castle
206 actors have appeared in both 9-1-1 and Castle, across 316 episodes. The most-credited is Claudia Christian, Captain Elaine Maynard in 9-1-1 and Logan Moore's Mother in Castle.
| Actor | In 9-1-1 | In Castle | Eps | Eps |
|---|---|---|---|---|
| Claudia Christian | Captain Elaine Maynard | Logan Moore's Mother | 19 | 1 |
| Arye Gross | Nathan Levinson | Dr. Sidney Perlmutter | 1 | 17 |
| Danny Nucci | Rick Romero | Gilbert Mazzara, Lance | 10 | 3 |
| Juliana Dever | Rachel Hawkerson | Jenny Ryan | 2 | 8 |
| Geoff Pierson | Lewis Kern | Mr. Smith | 3 | 6 |
| Gregory Harrison | Phillip Buckley | Danny Valentine | 7 | 1 |
| Sasha Roiz | Lou Ransone | Bobby Stark | 6 | 1 |
| Alicia Coppola | Carrie Walsh | Amber Patinelli | 3 | 1 |
| Jordan Belfi | Chase Mackey | Beau Randolph | 2 | 2 |
| Rick Cosnett | Julian Enes | Victor Crowne | 3 | 1 |
| Abby Brammell | Eva Mathis | Carol Thornton | 6 | 1 |
| Aline Elasmar | Dr. Valerie Salazar | Bridget Dantana | 6 | 1 |
| Abigail Spencer | Amber Braeburn | Sarah Reed / Lauren Branston | 2 | 1 |
| Daniel Roebuck | Norman Peterson | Joe Silva | 5 | 1 |
| Josh Stamberg | Detective Ben Hooks | Martin Danberg | 4 | 2 |
| Leonard Roberts | Ronnie Cooper | Special Agent Jason Avery | 3 | 2 |
| Tiffany Dupont | Ali Martin | Greta Mastroianni | 4 | 1 |
| Eric Ladin | Gary | Daniel Sullivan | 1 | 1 |
| Gina Torres | Tommy Vega | Penelope Foster | 1 | 1 |
| Romy Rosemont | Lola Peterson | Nurse Lockhart | 5 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.