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 Lauren Holly NCIS Director Jenny Shepard Actor David McCallum Dr. Donald "Ducky" Mallard Actor Jayne Brook Lyndi Crawshaw Guest Star Steve Braun Landon Grey Guest Star Nynno Ahli Rick Green Guest Star Wilson Cruz Todd Ryder Guest Star Chris Akers Johnny Smokerson Guest Star Donald P. Bellisario Executive Producer Dennis Smith Director David J. North Writer