Actors in both NCIS and The West Wing
182 actors have appeared in both NCIS and The West Wing, across 662 episodes. The most-credited is Lily Tomlin, Penelope Langston in NCIS and Deborah Fiderer in The West Wing.
| Actor | In NCIS | In The West Wing | Eps | Eps |
|---|---|---|---|---|
| Lily Tomlin | Penelope Langston | Deborah Fiderer | 1 | 34 |
| Teri Polo | Vivian Kolchak | Helen Santos | 2 | 18 |
| Alan Dale | Tom Morrow | Mitch Bryce | 16 | 2 |
| Karis Campbell | Navy Lt. Elaine Taylor | Ronna | 1 | 21 |
| Melinda McGraw | Diane Sterling | Jane Braun | 6 | 4 |
| Michael O'Neill | Former NCIS Special Agent Riley McCallister | Secret Service Agent Ron Butterfield | 3 | 14 |
| Tim Kelleher | NCIS Special Agent Christopher "Chris" Pacci | Dylan Clark | 5 | 2 |
| Michael Nouri | Mossad Director Eli David | Roy Turner | 5 | 1 |
| Matthew Del Negro | Balboa | Bram Howard | 1 | 16 |
| Kathleen York | Stephanie Flynn | Andrea Wyatt | 1 | 15 |
| Jesse Bradford | John Bishop | Ryan Pierce | 1 | 9 |
| Patricia Richardson | Judy Price Fielding | Sheila Brooks | 1 | 9 |
| Steven Culp | Navy Cmdr. William Skinner | Speaker of the House Jeff Haffley | 1 | 9 |
| Brigid Brannagh | Senator Constance Miller, Catherine Reynolds | Harriet | 3 | 1 |
| Jack Conley | Metro Detective Danny Sportelli | Major Anderson | 3 | 1 |
| Rocky Carroll | Director Leon Vance | Corey Sykes | 3 | 1 |
| Danica McKellar | Erin Kendall | Elsie Snuffin | 1 | 8 |
| James Morrison | CIA Assistant Director Jonathan Overmeier, U.S. Senator John Phillips | Colonel Jessie Weiskopf | 2 | 1 |
| Roma Maffia | NCIS Special Agent Vera Strickland | Officer Rhonda Sachs | 2 | 1 |
| Taye Diggs | Marine Gunnery Sergeant Aaron Davis | Secret Service Agent Wesley | 1 | 2 |
Cast data from TVmaze, licensed CC BY-SA 4.0.