NCIS — Season 1 cast

24 credited this season, ordered by appearances. Full series cast

Mark Harmon23 eps
Mark Harmonas Leroy Jethro Gibbs
Michael Weatherly23 eps
Michael Weatherlyas Tony DiNozzo
Sasha Alexander23 eps
Sasha Alexanderas Caitlin Todd
David McCallum23 eps
David McCallumas Dr. Donald 'Ducky' Mallard
Pauley Perrette23 eps
Pauley Perretteas Abby Sciuto
Pancho Demmings12 eps
Pancho Demmingsas Gerald Jackson
Sean Murray8 eps
Sean Murrayas Timothy McGee
Alan Dale5 eps
Alan Daleas Tom Morrow
Joe Spano4 eps
Joe Spanoas T.C. Fornell
Brian Dietzen3 eps
Brian Dietzenas Jimmy Palmer
Jessica Steen3 eps
Jessica Steenas Paula Cassidy
Tim Kelleher3 eps
Tim Kelleheras Christopher Pacci
Vivienne Bellisario
3 eps
Vivienne Bellisarioas Mysterious Redhead
Rudolf Martin2 eps
Rudolf Martinas Ari Haswari
Gregory Itzin2 eps
Gregory Itzinas Director Charlie
Asante Jones2 eps
Asante Jonesas Andy Kochofis
Robert Cicchini2 eps
Robert Cicchinias Daniel Snyder
Sheila Frazier2 eps
Sheila Frazieras Debra Green
Stacy Haiduk1 ep
Stacy Haidukas Melissa Dorn
Tommy Hinkley1 ep
Tommy Hinkleyas Deer Hunter
Jamie Luner1 ep
Jamie Luneras Amanda Reed
Sherilyn Fenn1 ep
Sherilyn Fennas Jane Doe / Suzanne McNeil
Robert Pine1 ep
Robert Pineas Ben
Julian Bailey1 ep
Julian Baileyas Petty Officer Ronald Zuger

Crew

Donald P. BellisarioDonald P. BellisarioExecutive Producer23 epsDonald P. BellisarioDonald P. BellisarioWriter8 epsWilliam WebbDirector of Photography5 epsAlan J. LeviAlan J. LeviDirector5 epsDennis SmithDennis SmithDirector5 epsJohn C. KelleyWriter4 epsJack BernsteinWriter4 epsDon McGillDon McGillWriter4 epsPeter EllisDirector3 epsGeorge SchenckWriter3 epsFrank CardeaFrank CardeaWriter3 epsJeff WoolnoughDirector2 eps