All 72 actors in both NCIS and Veronica Mars
72 actors have appeared in both NCIS and Veronica Mars, across 580 episodes. The most-credited is Christopher B. Duncan, CIA Officer Dale Harris in NCIS and Clarence Wiedman in Veronica Mars.
| Actor | In NCIS | In Veronica Mars | Eps | Eps |
|---|---|---|---|---|
| Christopher B. Duncan | CIA Officer Dale Harris | Clarence Wiedman | 1 | 8 |
| Christian Clemenson | Perry Sterling | Abel Koontz | 1 | 4 |
| Rodney Rowland | Operations Officer Jonah McGuire | Liam Fitzpatrick | 1 | 4 |
| Rick Peters | Vincent Maple | Dr. Tom Griffith | 2 | 5 |
| Anastasia Baranova | Melissa Canon | Lizzie Manning | 1 | 2 |
| Virginia Williams | Leah Ramsey | Heidi Kuhne | 2 | 1 |
| Patrick Wolff | Hood #2 | Hector | 1 | 12 |
| Alex Solowitz | Dave | Tyler Carr | 1 | 4 |
| Julie Gonzalo | Sarah Schaefer | Parker Lee | 1 | 1 |
| Adam Kaufman | Homicide Detective Philip McCadden | André | 2 | 1 |
| Alanna Ubach | NSA Senior Intelligence Analyst Sofia Martinez | Silvia | 2 | 1 |
| Geoff Pierson | Roy Carver | Stewart Manning | 1 | 2 |
| Michelle Wolff | Marine Srgt. Maria Sanchez | Female Deputy | 1 | 2 |
| David Starzyk | Allan J. Carter, Councilman Allan Berger | Richard Casablancas | 2 | 2 |
| Kari Coleman | Maggie Scott | Deborah Hauser | 1 | 3 |
| Patrick Cox | Parking Enforcement Officer Carl Bjork | Tayler Carr | 1 | 3 |
| Christine Lakin | Rachel Wells | Susan Knight | 1 | 1 |
| Eve Gordon | Amanda McCormick | Emily Williams | 1 | 1 |
| Kate McNeil | Commander Green | Betina Casablancas | 1 | 1 |
| Katie Leclerc | Marine Staff Sergeant Diana Murphy | Crystal | 1 | 1 |
| Lauren Stamile | Metro P.D. Detective Michelle Lane | Renee | 1 | 1 |
| Travis Schuldt | Freddy Martin, Paul Miller | Connor Larkin | 2 | 1 |
| Andrew Friedman | George | Mayor Mark Dobbins | 1 | 4 |
| Steve Rankin | Sgt. Bill Atlas | Lloyd Blankenship | 1 | 2 |
| Antonio Jaramillo | Pedro Rodriguez | Waiter | 1 | 1 |
| Michael Hyatt | Judy Williams | Woman's Studies Professor | 1 | 1 |
| Michael Kostroff | Felix Lassiter | Mr. Pope | 1 | 3 |
| Robert Baker | Seaman | Liam | 1 | 1 |
| Bruce Nozick | Harvey Grossman, Lacy | Sam Bloom | 2 | 1 |
| Paul Ganus | Department of Energy Deputy Director Doyle Roden | Harvey Greenblatt | 1 | 2 |
| Hervé Clermont | Christian Brodrick | Booker Woods | 1 | 3 |
| Adam Wylie | Darin Spotnitz | Grant Winters | 1 | 1 |
| François Chau | Henry Deng | Hu | 1 | 1 |
| Ashton Moio | Michael Reardon | Craig | 1 | 2 |
| Bradford Anderson | Second Geek | Ryan | 1 | 2 |
| Hector Atreyu Ruiz | Marine First Lieutenant Michael Torres | Angel | 2 | 1 |
| Sterling Macer, Jr. | Homeland Assistant Director Chris Hegarty, Marine Sgt. Chris Hegarty | Uncle Rucker | 2 | 1 |
| Inger Tudor | Doctor Sandra Holdren | Restaurant Manager | 1 | 1 |
| John Kellar | William / Fred Sammons | Dash | 1 | 1 |
| Michael McMillian | David Kemmons | Pete Comiscky | 1 | 1 |
| Mim Drew | Marie | Pamela | 1 | 1 |
| Stacy Edwards | Commander Janice Byers | Stephanie Denenberg | 1 | 1 |
| Eliza Shin | Myrna | Councilwoman Teresa Visinare | 1 | 2 |
| Hermie Castillo | Zeke | Loyd | 1 | 2 |
| Adam Hendershott | Josh | Butters Clemmons | 1 | 2 |
| Alex Ball | Navy Senior Chief Richard Granger | Political Consultant | 1 | 1 |
| Barry Livingston | Bartholomew Lemming | Coroner | 1 | 1 |
| Brian Oblak | MPD Cop #1 | Roger | 1 | 1 |
| Cameron Bender | Martin Gates | Nathan | 1 | 1 |
| Mario Ardila Jr. | Shayne Garcon | Future PCH'er Boy, Mugger "Arturo" | 1 | 2 |
| Zadran Wali | Imam Musa Ibn Hasan | Deputy | 1 | 1 |
| Charles Duckworth | Joe Bennes | Kelvin Moore | 1 | 1 |
| David Barrera | Charlie Milla | Carlos Oliveres | 1 | 1 |
| Gabriel Sousa | Jared | Gizmo | 1 | 1 |
| Karly Rothenberg | Female Passerby | Mama Carr | 1 | 1 |
| Kyle Searles | Aaron | Richie | 1 | 1 |
| Leonard Wu | Navy Midshipman Alex Delapena | Harrison Cho | 1 | 1 |
| Reginald Ballard | Antwane Mann | Dice | 1 | 1 |
| Robert Curtis Brown | Gary Tolin | Captain of Industry | 1 | 1 |
| Sam Sarpong | Bobby Jackson | Dime Bag | 1 | 1 |
| Jeffrey G. Barnett | David | Surfer | 1 | 1 |
| Wilmer Calderon | Wayne Cribbage A.K.A. Tiger Dad | Chardo Navarro | 1 | 1 |
| D. Elliot Woods | Detective Bradley | Ernie Sayers | 1 | 1 |
| David Tom | Maple | Chip Diller | 1 | 1 |
| Nick Alvarez | Jonny | Owen | 1 | 1 |
| Scott Michael Morgan | Virginia State Trooper Keyes | Karl | 1 | 1 |
| Tarina Pouncy | Virginia State Police Cpt. Anne Crenshaw | Sheila | 1 | 1 |
| Tim Chiou | Petty Officer Kevin Lim | James | 1 | 1 |
| Michael Canaan | MP | Vic Sciafarra | 1 | 1 |
| Samantha Klein | Nurse | Michele | 1 | 1 |
| Deborah Vancelette | Nurse | Sandra Bolan | 1 | 1 |
| Hugo Garcia | Ernie | Officer Vasquez | 1 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.