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 Bart McCarthy Marine Master Sgt. George Hawkins Guest Star Nikki Deloach Army Lt. Col. Maya Leland Guest Star Aaron Abrams Todd Price Guest Star Keith D. Robinson Henry Caldwell Guest Star Long Nguyen Ky Van Tu Guest Star Tembi Locke Alice Kent Staley Guest Star Connor Kalopsis Oscar Guest Star Tyree Brown Zak Guest Star Kyla-Drew Greta Staley Guest Star Gary Glasberg Executive Producer Chas. Floyd Johnson Executive Producer Mark Horowitz Executive Producer Shane Brennan Executive Producer Donald P. Bellisario Executive Producer Gina Lucita Monreal Writer Tony Wharmby Director