All 51 actors in both NCIS and The Walking Dead
51 actors have appeared in both NCIS and The Walking Dead, across 685 episodes. The most-credited is John Finn, Marine Commandant Charles T. Ellison in NCIS and Earl Sutton in The Walking Dead.
| Actor | In NCIS | In The Walking Dead | Eps | Eps |
|---|---|---|---|---|
| John Finn | Marine Commandant Charles T. Ellison | Earl Sutton | 3 | 11 |
| Jose Pablo Cantillo | DEA Agent Mark Sisco | Caesar Martinez | 1 | 13 |
| Brighton Sharbino | Young Abby Sciuto | Lizzie Samuels | 1 | 9 |
| Branton Box | John Smith | Fish | 1 | 5 |
| Karl Makinen | Marine Staff Sgt. James Dawson | Richard | 1 | 5 |
| Chris Coy | Riley Davis | Martin | 1 | 4 |
| Merritt Wever | Wendy Smith | Dr. Denise Cloyd | 1 | 9 |
| Vincent Ward | Cop, Sal | Oscar | 2 | 7 |
| Christine Woods | Rebecca Jennings | Dawn Lerner | 1 | 3 |
| Juan Javier Cardenas | Carlos Savina | Dante | 1 | 7 |
| Emma Bell | Navy Musician First Class Hannah McClain | Amy Harrison | 1 | 6 |
| Jeryl Prescott | Annie Sullivan | Jacqui | 1 | 6 |
| Briana Venskus-Vazquez | Joanna | Beatrice | 1 | 10 |
| Melissa Ponzio | Drew Turner | Karen | 1 | 7 |
| Andrew Rothenberg | Bruce Solomon | Jim | 1 | 5 |
| Breeda Wool | Dr. Childs | Aiden | 1 | 1 |
| Daniel Bonjour | Fabian Druker | Aiden Monroe | 1 | 3 |
| Denise Crosby | Secretary of the Navy Hattie Taylor | Mary | 1 | 3 |
| Jeananne Goossen | Marine Private Joan Matteson | Michelle | 3 | 1 |
| Robert Patrick | Colonel Merton Bell | Mays, Mays' Brother | 1 | 1 |
| Sunkrish Bala | Sameer Aziz | Dr. Caleb Subramanian | 1 | 4 |
| Michael Weaver | Thomas McAllister | The Warden | 1 | 2 |
| Donzaleigh Abernathy | NSA Deputy Director Ronda Ellis | Dr. Stevens | 1 | 3 |
| Markice Moore | Clean Up Crew | Andrew | 1 | 3 |
| Corey Brill | Brian Kramer | Pete Anderson | 1 | 5 |
| Brandon Fobbs | Coast Guard Petty Officer Third Class Ben Cooper | Terry | 1 | 1 |
| Ciera Payton | Laurie Perkins | Zia | 1 | 1 |
| Eve Gordon | Amanda McCormick | Celeste | 1 | 1 |
| James Parks | Brian Sikes | Captured Whisperer | 1 | 2 |
| Neil Brown Jr. | Martin Archer | Guillermo | 1 | 1 |
| Lawrence Kao | Pete Cannizaro | Tim | 1 | 3 |
| Teri Wyble | Kendra Allston | Officer Shepherd | 1 | 3 |
| William Gregory Lee | Metro Police Sgt. Keith Archer | Chanting Whisperer | 1 | 2 |
| Greg Perrow | Firefighter Dawson | Commonwealth Soldier | 1 | 1 |
| Rodney Rowland | Operations Officer Jonah McGuire | Baxter | 1 | 1 |
| Taylor Nichols | Hank Galvaston | Jeremiah | 1 | 1 |
| Chris Gann | Navy Captain Henry Nikolai | 40's Man | 1 | 1 |
| Darin Cooper | Roy Evans | Wade | 1 | 1 |
| Matt Bushell | Marine Lt. Rob King | Romano | 1 | 1 |
| Rich Ceraulo Ko | North Carolina State Trooper Muncie Tyson | Jiro | 1 | 1 |
| Steve Kazee | Michael Locke | Frank | 1 | 1 |
| Griffin Freeman | Navy Petty Officer Second Class Eric Brown | Mark | 1 | 2 |
| Scott Deckert | Bobby | John | 1 | 2 |
| Matt Lowe | Joey Barrett | Cam | 1 | 1 |
| E. Roger Mitchell | M.P. | Paul | 1 | 2 |
| Victor McCay | Ash | Ryan Samuels | 1 | 2 |
| AJ Achinger | Spencer Cox | Ken | 1 | 1 |
| Craig Gellis | Civilian Crewman #1 | Tough Grizzled Savior | 1 | 1 |
| Franco Barberis | Marine Gunnery Sergeant Matt Lecroix | Supervisor | 1 | 1 |
| Cameron Deane Stewart | Ben Koss | Christopher | 1 | 1 |
| Cuyle Carvin | Navy Lieutenant Commander Oliver Happ | Savior #1 | 1 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.