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 Muse Watson Mike Franks Guest Star Daniel Zolghadri Luke Harris Guest Star Giles Matthey Daniel Budd Guest Star Babar Peerzada Sadiq Samar Guest Star Anthony Keyvan Elan Ghorbani Guest Star Adetokumboh M'Cormack Matthew Rousseau Guest Star Gary Glasberg Executive Producer, Writer Chas. Floyd Johnson Executive Producer Mark Horowitz Executive Producer Shane Brennan Executive Producer Donald P. Bellisario Executive Producer Tony Wharmby Director