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 Jon Cryer Dr. Cyril Taft Guest Star Scottie Thompson Jeanne Benoit Guest Star Joel Gretsch NCIS Special Agent Stan Burley Guest Star David Chisum Dr. David Woods Guest Star Annie Tedesco Navy Lt. Liz Cortland Guest Star Gabriel Hogan Navy SEAL Cmdr. Pete Grady Guest Star Katie Roberts Navy Ensign Joni Ryan Guest Star Omono Okojie Bahar Tambai Guest Star Noel Arthur Ramses Guest Star Sarah Jane MacKay Rose Guest Star Akuyoe Graham Zayah 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, Writer Donald P. Bellisario Executive Producer Tony Wharmby Director