All 92 actors in both Castle and Franklin & Bash
92 actors have appeared in both Castle and Franklin & Bash, across 213 episodes. The most-credited is Beau Billingslea, Dr. Walter Parish in Castle and Judge James Douglas in Franklin & Bash.
| Actor | In Castle | In Franklin & Bash | Eps | Eps |
|---|---|---|---|---|
| Beau Billingslea | Dr. Walter Parish | Judge James Douglas | 1 | 5 |
| Jane Seymour | Gloria Chambers | Colleen Bash | 1 | 4 |
| Michael Hyatt | Mrs. Leslie Ruiz | Judge Elizabeth Sheffield | 1 | 3 |
| Currie Graham | Stanford Raynes | Mr. Kirk | 1 | 1 |
| François Chau | Clifford Lee | Mr. Han | 1 | 1 |
| Fred Willard | Hank McPhee | Wallace Clayton | 1 | 1 |
| Jocko Sims | Matt Hendricks | R.J. Carlton | 2 | 2 |
| Judith Scott | Evelyn Montgomery | Samanatha | 3 | 1 |
| Lola Glaudini | Marilyn Sutton | Freddie Silmas | 1 | 1 |
| Vedette Lim | Meadow | Rachel Dawson | 1 | 1 |
| Brian Howe | Aaron Lerner | A.D.A. Brad Hewett | 1 | 2 |
| Leonard Roberts | Special Agent Jason Avery | Dante Cole | 2 | 1 |
| Mercedes Colon | Philip Lee's Attorney | Judge Jill Sheehan | 1 | 3 |
| Anne Ramsay | Bree Busch | Martha Strauss | 1 | 1 |
| Bre Blair | Toni Johnston | Maya Paxton | 1 | 1 |
| Chris Mulkey | Wilbur Pittorino | Capt. N. Goepp | 1 | 1 |
| David Gautreaux | Dr. Oliver Pressing | Judge Martin Wilson | 1 | 2 |
| Jacqueline Obradors | Allison Hyde | Glenna Sproik | 1 | 2 |
| Jaime Ray Newman | Holly Franklin | Cheryl Koch | 1 | 1 |
| Jamie McShane | Tony "The Butcher" Valtini | Julian Aroyan | 1 | 1 |
| Josh Randall | Miles Haxton | Commander Steven Puckett | 1 | 1 |
| Kevin Christy | Todd / Brandon Northcliff | Mason Trawley | 1 | 1 |
| Larry Poindexter | Det. McBride | Carter Dunlap | 1 | 1 |
| Patrick Fabian | Peter Monroe | Paul Levy | 1 | 1 |
| Patrick Fischler | Leo | John Stills | 1 | 1 |
| Robert Pine | Gerry Finnegan | Duncan Morrow | 1 | 1 |
| Scott Michael Campbell | Lee Travis | Denny Kresge | 1 | 1 |
| Seth Green | Linus | Eric Jango | 1 | 1 |
| Tiffany Dupont | Greta Mastroianni | Elisa Farrell | 1 | 1 |
| Tom Virtue | Judge Fitz | Madison's Lawyer | 1 | 1 |
| Brett Weinstock | Kent Wilder | Craig Baker | 1 | 2 |
| Colleen Foy | Lauren Goldberg | Annabel Brady | 1 | 1 |
| Daniel Roebuck | Joe Silva | Dewey Barba | 1 | 1 |
| Jackie Debatin | Realtor | Kelly McDowell | 1 | 1 |
| Jim Gleason | Dr. Barry Frank | Wagner | 1 | 1 |
| Jon Polito | Harold Leone | Lucky Louie | 1 | 1 |
| Judith Moreland | Sandy Jenkins | Judge Jennifer Nash | 1 | 1 |
| Laurie Fortier | U.S. Attorney Stephanie Goldmark | Allison Burien | 1 | 1 |
| Mark Rolston | Kurt Van Zant | Judge Clarence Rydberg | 1 | 1 |
| Spencer Garrett | Evan Pierce | Jeff Lisk | 1 | 1 |
| Tuc Watkins | Roger Masters | Lance Dillon | 1 | 1 |
| Julian Acosta | Alfred Candela | Henry Stein | 1 | 2 |
| David Burke | Chief John Brady | Assistant District Attorney | 1 | 1 |
| Ian Reed Kesler | Hugo Morrison | Greg Morrow | 1 | 1 |
| Katrina Norman | Josie Lang | Emilia Case | 1 | 1 |
| Mackenzie Astin | Phillip Bartlett | Seth | 1 | 1 |
| Muse Watson | Ivan Podofski | Officer Werth | 1 | 1 |
| Andy Umberger | Johnny Rosen | Mike Dixon | 1 | 1 |
| Bellamy Young | Candace Ford | Margaret Pollock | 1 | 1 |
| Charles Malik Whitfield | Charles Wyler | Beckman's Lawyer | 1 | 1 |
| Dale Waddington Horowitz | Kelly Gunther | Judge Melinda Wells | 1 | 1 |
| David Hoffman | Ned Werner | Matt | 1 | 1 |
| Don McManus | Archie "The Savannah Hammer" Bronstein | Judge Derek Kohler | 1 | 1 |
| Jeff Doucette | Super | D.A. Harrison Gingle | 1 | 1 |
| John Kapelos | Joe Pulgatti | Roland Stray | 1 | 1 |
| Kevin Daniels | Reggie Blake | Officer Wiltern | 1 | 1 |
| Richard Portnow | Detective Milt Boyle | Richard Cole | 1 | 1 |
| Robin Thomas | Alan Freeman | Big Mack | 1 | 1 |
| Adargiza De Los Santos | Receptionist | Court Rep / Marcy | 1 | 2 |
| Aaron Hill | Kurt Wilson | Zach Harvin | 1 | 1 |
| Armin Shimerman | Benjamin Donnelly | Stu Weston | 1 | 1 |
| Brian McNamara | Mike Sampson | Tom Parker | 1 | 1 |
| Corbin Bleu | Hunter | Jordan French | 1 | 1 |
| Doug Simpson | Henry Browning | Mr. Bracca | 1 | 1 |
| J.D. Walsh | John Emerson | Allen Slayton | 1 | 1 |
| Peter MacKenzie | Sgt. Roman | Marcel Ziff | 1 | 1 |
| Steve Talley | Kent Scoville | Brock Daniels | 1 | 1 |
| Tom Wright | Fats Shepherd | Judge Gerald Whitman | 1 | 1 |
| Van Epperson | Postal Clerk | Judge Ken Winkleman | 1 | 1 |
| Bill Parks | Tommy | Inebrio | 1 | 1 |
| Charlie Finn | Ian Yankman | Colin Morrow | 1 | 1 |
| Jim Piddock | Lord Henry | Dean Casseday | 1 | 1 |
| Regi Davis | Dr. Bailey | Park Ranger Brooks | 1 | 1 |
| Arlene Santana | Jasmine | Brenda Griffin | 1 | 1 |
| Christopher Michael | Officer Simms | Officer #1 | 1 | 1 |
| Kasey Mahaffy | Lance Newman | Roderick "Freck" Hildebrandt | 1 | 1 |
| Meg Cionni | Tessa | Noelle Gardner | 1 | 1 |
| Paul Cassell | Marcus Conway | Dr. Stephan Hall | 1 | 1 |
| Shawn Carter Peterson | Barry Bavetta | Clan Member #2 | 1 | 1 |
| Stephan Smith Collins | Harley | Cop | 1 | 1 |
| Vivian Kerr | Amanda Lowery | Waitress | 1 | 1 |
| Ali Chen | CSU Tech | court reporter | 1 | 1 |
| Brian Oblak | Head of Security | Officer Preston | 1 | 1 |
| Jim Turner | Janacek Spivey | Joan Harris' Attorney | 1 | 1 |
| Kevin Herrera | Waiter | Evan | 1 | 1 |
| D.C. Douglas | Bill Moss | Wooten | 1 | 1 |
| Janice Kent | Evelyn Ross | Leonard Franklin's secretary | 1 | 1 |
| Josh Latzer | Gary Duffin | Workman | 1 | 1 |
| Teddy Lane, Jr. | Taylor | Ricky | 1 | 1 |
| Kiyano La'Vin | Construction Worker | tough inmate | 1 | 1 |
| Frank Birney | Father McCaskey | Male Board Member #3 | 1 | 1 |
| Sam Hennings | Seth Harris | Hugh King | 1 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.