Leroy Jethro Gibbs is played by Mark Harmon
Ziva David is played by Cote de Pablo
Anthony DiNozzo is played by Michael Weatherly
Abby Sciuto is played by Pauley Perrette
Timothy McGee is played by Sean Murray
Jenny Shepard is played by Lauren Holly
Donald "Ducky" Mallard is played by David McCallum
Pauley Perrette has played Abby right from the start of NCIS. NCIS premiered on the 23rd of September in 2004.
Ari Haswari is portrayed by Rudolf Martin on NCIS.
David McCallum
Mark Horowitz has: Played Himself - Co-Executive Producer in "NCIS: Behind the Set: The Production Design of NCIS" in 2007. Played Himself - Co-Executive Producer in "NCIS: Picture Perfect: The Look of NCIS" in 2007. Played himself in "Nine is Fine" in 2012. Played himself in "Casting Off" in 2012. Played himself in "Episode Two Hundred" in 2012. Played himself in "NCIS: Season 10 - A Death in the Family" in 2013. Played himself in "NCIS - Season 10: X Marks the Spot: A Look at Season X" in 2013.
Stephanie Mello has: Played Courtney in "Growing Pains" in 1985. Played Obofa in "Co-Incidence" in 2002. Played NCIS Tech in "NCIS: Naval Criminal Investigative Service" in 2003. Played Cynthia Sumner in "NCIS: Naval Criminal Investigative Service" in 2003. Played NCIS Tech Cynthia Sumner in "NCIS: Naval Criminal Investigative Service" in 2003. Played Casting Director in "Big Time Rush" in 2009.
Nina Foch played the character of Dr. Mallard's mom in NCIS
Actress Rena Sofer played the role of Lawyer M Allison Hart in NCIS season 7
Lauren Holly
Sasha Alexander
Ellis
Armand Assante
Actress Scottie Thompson played the character of Jeanne Benoit in NCIS. She appeared in Seasons 4 and 5. She was romantically involved with Agent DiNozzo of NCIS. Her character broke off the relationship with Tony Dinozzo and went to a different place. Her character never came up after that date. She was romantically involved with Agent DiNozzo of NCIS.