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, Director David McCallum Dr. Donald "Ducky" Mallard Actor Kelli Williams NCIS Special Agent Maureen Cabot Guest Star Margo Harshman Delilah Fielding Guest Star Gregory Harrison Capt. Roland Ebbakey Guest Star Brad Benedict Lt. Nick Rossmore Guest Star Kelly Frye Lt. Kara Gifford Guest Star Ryan Kennedy Peter Woodruff Guest Star Andrew Hawkes Metro P.D. Detective Dan Campbell Guest Star Alisha Boe Farrah Meyers Guest Star Dante Swain Petty Officer 2nd Class Adam Meyers Guest Star Makabe Ganey Jackson Edward Guest Star Melissa Greenspan Mother Guest Star Gary Glasberg Executive Producer 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 Donald P. Bellisario Executive Producer Jennifer Corbett Writer