Mark Harmon NCIS Special Agent Leroy Jethro Gibbs Actor Michael Weatherly NCIS Special Agent Anthony "Tony" Dinozzo Actor Cote de Pablo NCIS Special Agent Ziva David Actor Pauley Perrette Forensic Specialist Abby Sciuto Actor Sean Murray NCIS Special Agent Timothy McGee Actor Brian Dietzen Dr. Jimmy Palmer Actor Rocky Carroll NCIS Director Leon Vance Actor David McCallum Dr. Donald "Ducky" Mallard Actor Ralph Waite Jackson Gibbs Guest Star Billy Dee Williams Leroy Jethro Moore Guest Star Piter Marek Vijay Chaya Guest Star Brett Davern Kris Taylor Guest Star Jake Thomas Alec Dell Guest Star Debra Christofferson Rita Gregg Guest Star Edwin Hodge Bodie Guest Star Julie McNiven Kim Taylor Guest Star Jonathan Camp Petty Officer 3rd Class Colin Boxer Guest Star Tierra Carlson Chaya's Girlfriend Guest Star Donald P. Bellisario Executive Producer George Schenck Writer Frank Cardea Writer Arvin Brown Director