All 70 actors in both Castle and SEAL Team
70 actors have appeared in both Castle and SEAL Team, across 287 episodes. The most-credited is Parisa Fakhri, Colette Roth in Castle and Naima Perry in SEAL Team.
| Actor | In Castle | In SEAL Team | Eps | Eps |
|---|---|---|---|---|
| Parisa Fakhri | Colette Roth | Naima Perry | 1 | 52 |
| Jamie McShane | Tony "The Butcher" Valtini | Capt. Greyson Lindell | 1 | 17 |
| C. Thomas Howell | John Campbell | Ash Spenser | 1 | 12 |
| Michaela McManus | Scarlett Price | Alana Hayes | 1 | 11 |
| Rachel Boston | Penny Marchand | Hannah Oliver | 1 | 11 |
| Sunkrish Bala | Vikram Singh | Fitzgerald | 9 | 1 |
| Michael McGrady | Brian Reilly | Captain Harrington | 1 | 8 |
| Michael Irby | Shane Winters | Adam Seaver | 1 | 11 |
| Tamala Reneé Jones | Dr. Lanie Parish | Gunnery Sergeant Miller | 1 | 5 |
| Dylan Walsh | FBI Agent Harris | Captain Walch | 2 | 3 |
| Mac Brandt | Jeremy | Ross Curtis | 1 | 4 |
| Philip Anthony-Rodriguez | Michael Grant | Ops Officer Smith | 1 | 4 |
| Darren Pettie | Trapper John | Paul Mulwray | 1 | 7 |
| Kim Hawthorne | Angela Matthews | Admiral Stevens | 1 | 7 |
| Bailey Chase | Will Sorenson | Eddie Guzman | 2 | 1 |
| Joseph C. Phillips | Mayor | Benjamin Reed | 2 | 1 |
| Samantha Sloyan | Pam | Victoria Seaver | 1 | 4 |
| Alex Fernandez | Capt. Marcus Donovan | Admiral Rivas | 1 | 5 |
| Dennis Cockrum | Auctioneer | General Cook | 1 | 2 |
| Derek Phillips | Reggie Walsh | LCDR Kirkpatrick | 1 | 3 |
| Corey Reynolds | Mr. West | Scott Patton | 1 | 1 |
| Daniella Alonso | Maria Sanchez | Dr. Leigh Dyer | 1 | 1 |
| David Chisum | Thomas Gage | Brett Baxter | 2 | 1 |
| David DeSantos | George Reyes | Tim Belding | 1 | 3 |
| Gonzalo Menendez | Ronaldo | Captain Thomas Garcia | 1 | 1 |
| Linda Park | Chief Inspector Zhang | Dr. Koch | 1 | 1 |
| Reiko Aylesworth | Mia Lopez | Dr. Julie Kruger | 1 | 1 |
| Catherine Dent | Beth Tanner | Liddy Breen | 1 | 1 |
| Chris L. McKenna | Simon Westport | Pete Green | 1 | 1 |
| Kamar de los Reyes | Manuel Villalobos | Comandante Salas | 1 | 1 |
| Mark Rolston | Kurt Van Zant | David Alper | 1 | 1 |
| Lochlyn Munro | Kevin McCann | Mike Zell | 1 | 2 |
| Doug Savant | Trevor Nigel | Malcolm | 1 | 1 |
| Elizabeth Pan | Reporter #1 | Han Min | 1 | 1 |
| Ion Overman | Candace Robinson | Dr. Finley | 1 | 1 |
| Mary-Pat Green | Erin Murphy | Edna | 1 | 1 |
| Natasha Hall | Madison Beaumont | Lt. Commander Williams | 1 | 2 |
| Ron Roggé | Wolkowski | Captain Bryce | 1 | 1 |
| Tim Jo | Ben Lee | Evan | 1 | 1 |
| Don Franklin | Tommy Zane | Pastor Mel | 1 | 2 |
| Tony Nevada | ESU Team Leader | Alpha 3, Devgru OP #4 | 1 | 2 |
| Austin Highsmith Garces | Camille Roberts | Trish | 1 | 1 |
| Brian Howe | Aaron Lerner | Oliver Carter | 1 | 1 |
| Fareed Ward | Bartender | Odeev | 1 | 1 |
| Layla Alizada | Phoebe | Hajira | 1 | 1 |
| Mario Perez | Man | Rasposo | 1 | 1 |
| Romi Dias | ADA Toni Gonzalez | General Chloe Sullivan | 1 | 1 |
| Stephen Oyoung | Guard | Operations Officer Calvin Lee | 1 | 1 |
| John R. Colley | Paul Deschile | IT Tech | 1 | 2 |
| Rodney J. Hobbs | Worker | Sarsfield | 1 | 1 |
| Branton Box | Volkov's Man | Evans | 1 | 1 |
| David Barrera | Principal Joe Silva | Jeff Walker | 1 | 1 |
| Jamie Martz | Male EMT | Marine Lt. | 1 | 1 |
| Mark Espinoza | Professor Stevenson | Gen. Gene Parsons | 1 | 1 |
| Nick Gracer | Vlad Bardinov | Prenko | 1 | 1 |
| Peter Asle Holden | Ken Castor | Steve | 1 | 1 |
| Robert Cicchini | Mr. Turino | Dr. Bernstein | 1 | 1 |
| Aimee Parker | Grace | Lt. Commander Cook | 1 | 1 |
| Andrew Hwang | Takata | Intelligence Officer | 1 | 1 |
| Brandon Morales | Cop | Corpsman | 1 | 1 |
| Jon Paul Burkhart | Potential Dewey | Gary Goldfein | 1 | 1 |
| Kwahbena Darkwah | Man | Sudanese Officer | 1 | 1 |
| Laura Gardner | Patrice Tolbert | Doris Sawyer | 1 | 1 |
| Paul Cassell | Marcus Conway | Rick | 1 | 1 |
| Samantha Cutaran | Gym Clerk | Filipina waitress | 1 | 1 |
| Ken Meseroll | Man | Priest | 1 | 1 |
| Van Epperson | Postal Clerk | Senator Walters | 1 | 1 |
| Wilmer Calderon | Marvin "Oz" Osminkowski | Eric Hicks | 1 | 1 |
| Zoran Radanovich | Jimmy Lennon | Luka Baljic | 1 | 1 |
| Anthony Nanakornpanom | Leo Longarzo | ALA Terrorist | 1 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.