All 121 actors in both Castle and Law & Order: LA
121 actors have appeared in both Castle and Law & Order: LA, across 195 episodes. The most-credited is Michael Mosley, Jerry Tyson in Castle and Robert Forrester in Law & Order: LA.
| Actor | In Castle | In Law & Order: LA | Eps | Eps |
|---|---|---|---|---|
| Michael Mosley | Jerry Tyson | Robert Forrester | 4 | 1 |
| Andy Umberger | Johnny Rosen | Chief Thompson | 1 | 2 |
| Currie Graham | Stanford Raynes | Defense Attorney Max Hearn | 1 | 2 |
| Don Stark | Vincent "The Scar" Cardano | Mayor Jack Velman | 2 | 1 |
| Jason Beghe | Mike Royce | Raymond Garson | 2 | 1 |
| Deborah Van Valkenburgh | Ruth Spurloch | Liz Knight | 1 | 1 |
| Denise Crosby | Dr. Marion Baker | Diana Burt | 1 | 1 |
| Jodi Lyn O'Keefe | Kristina Coterra | Jenn Mackie | 1 | 1 |
| K Callan | Delores Marsh | Louise Hammond | 1 | 1 |
| Kathleen Rose Perkins | Elise Finnegan | Amy Powell | 1 | 1 |
| Lise Simms | Wendy Johnson | Coach Gayle Hanson | 1 | 1 |
| Marc Blucas | Jeremy Preswick | Chip Jarrow | 1 | 1 |
| Teri Polo | Kayla Baron | Casey Winters | 1 | 3 |
| Katherine Kamhi | Lina El-Masri | Det. Anna Lundgrad | 2 | 1 |
| Lee Tergesen | Marcus Gates | Patrick Denton | 2 | 1 |
| Alla Korot | Dry Cleaner | Anna Ackroyd | 2 | 1 |
| Amy Hill | Alma | Judge Taryn Tanabe-Ford | 1 | 1 |
| Chris Coy | Zeke | Dave Harlin | 1 | 1 |
| Christopher Cousins | Nolan Burns | Nelson's Lawyer | 1 | 1 |
| Conor O'Farrell | Ronald Armstrong | Defense Attorney Lane Garfield | 1 | 2 |
| David Meunier | Sasha | Charles Roker | 1 | 1 |
| Dean Norris | Captain John Davis | Bob Kentner | 1 | 1 |
| Dohn Norwood | Charles Oni | Mr. Tasker | 1 | 1 |
| James Morrison | Commissioner Malone | Gray Campbell | 1 | 1 |
| Patrick Fischler | Leo | Defense Attorney Josh Solomon | 1 | 1 |
| Samantha Sloyan | Pam | Rachel Forester | 1 | 1 |
| Tom Virtue | Judge Fitz | Rogan Malone | 1 | 1 |
| Tony Plana | Father Aguello | Jorge Gomez | 1 | 1 |
| Andrew Rothenberg | Donald Salt | Stanley Vaughn | 1 | 1 |
| Catherine Dent | Beth Tanner | Defense Attorney | 1 | 1 |
| Erin Foster | Sky Blue | Carmen | 1 | 1 |
| Julio Oscar Mechoso | Mario Sanchez | Luis Valdez | 1 | 1 |
| Kenneth Mitchell | Paul Whittaker | Terry Walker | 1 | 1 |
| Raphael Sbarge | Dr. Darrell Meeks | Dennis Ackroyd | 1 | 1 |
| Reed Diamond | Dr. Cameron Talbot | Franklin Citron | 1 | 1 |
| Susan Park | Mei Wu | Min Ho Lee | 1 | 1 |
| Claudia Choi | CSU Photo Technician, Video Technician | Judge Reiko Glick | 2 | 1 |
| Bellamy Young | Candace Ford | Monica Jarrow | 1 | 1 |
| Charles Malik Whitfield | Charles Wyler | Al Hayes | 1 | 1 |
| Frederick Koehler | Adam Pike | SID Tech Gilbert | 1 | 1 |
| Heather Mazur | Gwen Kelly | Dr. Phoebe Coburn | 1 | 1 |
| John Kapelos | Joe Pulgatti | Mark Buckley | 1 | 1 |
| Kimleigh Smith | Joyce | Sara Mitchell | 1 | 1 |
| Laura Niemi | Bernie Cosetti | Madeline Maynard | 1 | 1 |
| Lisa Kaminir | Captain Edmunds | Deputy D.A. Karen Paley | 1 | 1 |
| Lori Alan | Ms. Papen | Robbi Nathan | 1 | 1 |
| Melinda Page Hamilton | Diana Harris | Attorney | 1 | 1 |
| Patrick Heusinger | Raymond Vance | Dan Rathman | 1 | 1 |
| Rob Brownstein | Captain Ziering | Brandon Abel | 1 | 1 |
| Ron Roggé | Wolkowski | Jim Reed | 1 | 1 |
| Sophina Brown | Brooke Carver | Julia Chaffey | 1 | 1 |
| Tim Guinee | Andrew Haynes | Colonel Richards | 1 | 1 |
| Roberto Sanchez | Jiggy Michaels | Deputy Warden Fisher | 1 | 2 |
| Aaron Hill | Kurt Wilson | Patrick Scott | 1 | 1 |
| Al Vicente | Norton Grimes | Enrique Lopez | 1 | 1 |
| Andrea Grano | Mrs. Stan Banks | Coach Jackie Fernandez | 1 | 1 |
| Blake Shields | Eric Logan | Blake Humphry | 1 | 1 |
| Charles Rahi Chun | Paul Cho | Mitch Pellington | 1 | 1 |
| Dennis Cockrum | Auctioneer | Steve Morris | 1 | 1 |
| Erin Cahill | Cecily Burkett | Annette Kay | 1 | 1 |
| Gareth Williams | Wesley Grovner | Jim Bikel | 1 | 1 |
| Julian Acosta | Alfred Candela | Gang Unit Detective Jorge Rivas | 1 | 1 |
| June Carryl | Therapist | Female Uni | 1 | 1 |
| Nicki Micheaux | Michelle | Vanessa Hayes | 1 | 1 |
| Ray Stoney | Otis Williams | SID Tech Carson | 1 | 1 |
| Robin Thomas | Alan Freeman | Marty Fox | 1 | 1 |
| Al Pugliese | Pretzel Vendor | Detective Kavanaugh | 1 | 2 |
| Kim Hawthorne | Angela Matthews | Patricia | 1 | 1 |
| Larry Clarke | Tony Muller | Don Wheeler | 1 | 1 |
| Marlene Forte | Blanca | Inez Gomez | 1 | 1 |
| Michael A. DiBacco | Store Owner | Officer Jackson | 1 | 1 |
| Peter MacKenzie | Sgt. Roman | Attorney Simms | 1 | 1 |
| Priscilla Garita | Bridge Officer | Angela Cordero | 1 | 1 |
| Rand Holdren | Pete Mucha | Trevor Cannon | 1 | 1 |
| Shannon Lucio | Rebecca Fog | Kim Miller | 1 | 1 |
| Andres Perez-Molina | Peter Cordero | Freddy Ramirez | 1 | 1 |
| Chris Cordone | Colin Rigsdale III | Brad Harris | 1 | 1 |
| Cynthia Frost | Tova | Dorothy Lane | 1 | 1 |
| Daniel Hugh Kelly | Evan Potter | Judge Royce | 1 | 1 |
| Glenn Taranto | Douglas Lawson | Sergeant Greeley | 1 | 1 |
| Herbert Russell | Bob | Jack Bryce | 1 | 1 |
| Ivo Nandi | Teodor Hajek | Fedora Man | 1 | 1 |
| Nick Jandl | Trey Harmon | Gus Corallo | 1 | 1 |
| Robert Cicchini | Mr. Turino | Restaurant Owner | 1 | 1 |
| Chic Daniel | Thomas | SWAT Lieutenant | 1 | 1 |
| Colby French | NYPD Detective | Doug | 1 | 1 |
| James Huang | Edward Han | Agent Tom Hsu | 1 | 1 |
| Jennifer Riker | Sue Vaughn | Senator Celeste Kelman | 1 | 1 |
| Jeris Lee Poindexter | Older Man | Homeless Man | 1 | 1 |
| Laura Gardner | Patrice Tolbert | Karen Russell | 1 | 1 |
| Chuck McCollum | Clerk | Bud Tancock | 1 | 1 |
| Jesse Luken | Carter Wexland | Carlton Campbell | 1 | 1 |
| Jim Piddock | Lord Henry | Jay Bickson | 1 | 1 |
| Mark Bloom | Neal Morris | Rich Yates | 1 | 1 |
| Patrick Robert Smith | Marty Bentley | Burly Suit | 1 | 1 |
| Sam Ayers | Bartender | Eddie Russ | 1 | 1 |
| Scott Klace | Wallace Williger | Fire Chief Gable | 1 | 1 |
| Bruce Katzman | Benjamin Morris | Theo Corker | 1 | 1 |
| David Landry | Neal Wentworth | Officer Cortina | 1 | 1 |
| Jamison Haase | FBI Agent Lucas | Beach Cop | 1 | 1 |
| Matthew Alan | Jason Bagwell | Billy Russ | 1 | 1 |
| Michael Raynor | Dr. Silverman | Vince Braden | 1 | 1 |
| Michael Yavnieli | Marshall Drooen | Detective Dovzhenko | 1 | 1 |
| Nick Gracer | Vlad Bardinov | Eznik Abajian | 1 | 1 |
| David A. Kimball | Mr. Kendall | Dr. Peter Weinstein | 1 | 1 |
| Janet Hoskins | Betty | Dena | 1 | 1 |
| Jeff Harlan | Frank Davis | Terry Sullivan | 1 | 1 |
| Jonathan Emerson | Father Joe McMurtry | Sid Holloway | 1 | 1 |
| Nick Hoffa | Staff Sgt. Cass | Officer Dominick | 1 | 1 |
| Yves Bright | Tom Richwood | Trevor Knight | 1 | 1 |
| Charles Carpenter | Reporter | Guard #1 | 1 | 1 |
| Chris Erric Maddox | Kris | Tech | 1 | 1 |
| Dave Florek | Harvey | Mr. Gill | 1 | 1 |
| Lou George | Charlie Blunt | Bill Dougherty | 1 | 1 |
| Rodney J. Hobbs | Worker | Reporter #1 | 1 | 1 |
| Tatum Shank | Officer Billups | Tracker | 1 | 1 |
| Yolanda Snowball | Rebecca Doolin | Court Clerk | 1 | 1 |
| Byrne Offutt | Manager | Joe Rivlin | 1 | 1 |
| Fred Cross | Dr. Haver | Paul Roth | 1 | 1 |
| Michael Enright | Noel Du Preez | Nick Libergal | 1 | 1 |
| Randa Walker | Flight Attendant | Behrens | 1 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.