Mark Harmon NCIS Special Agent Leroy Jethro Gibbs Actor, Executive Producer Michael Weatherly NCIS Special Agent Anthony "Tony" Dinozzo Actor Pauley Perrette Forensic Specialist Abby Sciuto Actor Sean Murray NCIS Special Agent Timothy McGee Actor Brian Dietzen Dr. Jimmy Palmer Actor Emily Wickersham Probationary NCIS Agent Eleanor "Ellie" Bishop Actor Rocky Carroll NCIS Director Leon Vance Actor David McCallum Dr. Donald "Ducky" Mallard Actor Mimi Rogers CIA Officer Joanna Teague Guest Star Jon Cryer Dr. Cyril Taft Guest Star Muse Watson Mike Franks Guest Star Daniel Zolghadri Luke Harris Guest Star Giles Matthey Daniel Budd Guest Star David Andrews U.S. Secretary of Defense Errol Coyne Guest Star Adetokumboh M'Cormack Matthew Rosseau Guest Star Kenny Leu CIA Officer Kenny Young Guest Star Hector Hugo Navy Cmdr. Lewis Dacey Guest Star Katie Roberts Navy Surgical Tech Ensign Joni Ryan Guest Star Mila Brener Kelly Gibbs Guest Star Kent Shocknek Guy Ross Guest Star Jim Lau Vendor Guest Star Donnabella Mortel Navy Corpsman Guest Star Gary Glasberg Executive Producer, Writer Chas. Floyd Johnson Executive Producer Mark Horowitz Executive Producer Frank Cardea Executive Producer George Schenck Executive Producer Steven D. Binder Executive Producer Scott Williams Executive Producer, Writer Donald P. Bellisario Executive Producer Tony Wharmby Director