•Mark Harmon | played | Special Agent Leroy Jethro Gibbs (285Eps.) |
•Michael Weatherly | played | Special Agent Anthony "Tony" DiNozzo (285Eps.) |
•Pauley Perrette | played | Forensics Specialist Abby Sciuto (283Eps.) |
•Sean Murray | played | Special Agent Timothy "Tim" McGee (Season 2-; recurring previously) (262Eps.) |
•Brian Dietzen | played | Assistant Medical Examiner Jimmy Palmer (Season 10-; recurring previously) (63Eps.) |
•Emily Wickersham | played | Special Agent Eleanor “Ellie” Bishop (S11E12-; recurring previously) (43Eps.) |
•Rocky Carroll | played | Director Leon Vance (Season 6-) (158Eps.) |
•David McCallum | played | Chief Medical Examiner Dr. Donald "Ducky" Mallard (283Eps.) |
•Cote de Pablo | played | Special Agent Ziva David (Seasons 3-11E02) (187Eps.) |
•Lauren Holly | played | Director Jenny Shepard (S03E09-S05) (67Eps.) |
•Sasha Alexander | played | Special Agent Caitlin "Kate" Todd (Seasons 1-2) (46Eps.) |