Mark Harmon
Acting
Thomas Mark Harmon (born September 2, 1951) is an American actor, producer and director. He is known for playing the lead role of Leroy Jethro Gibbs on NCIS (2003-2021), a role which has earned him six nominations at the People's Choice Awards including a win for Favorite TV Crime Drama Actor in 2017. Since 2008, he has also been a producer and executive producer of the show as well as its' spinoff series NCIS: New Orleans. His character of NCIS special agent Leroy Jethro Gibbs was introduced in a guest starring role in two episodes of JAG, and continued on the spinoff show NCIS.
He had a recurring role as Secret Service special agent Simon Donovan in a four-episode story arc in The West Wing in 2002, for which he received an Emmy Award nomination.
One of his first national TV appearances (other than as an athlete) was in a commercial for Kellogg's Product 19 cereal with his father, Tom Harmon, its longstanding TV spokesman. Thanks to his sister Kristin's in-laws, Ozzie and Harriet Nelson, he landed his first job as an actor in an episode of Ozzie's Girls.
He has been starring in television and film since the mid-1970s, after a career as a collegiate football player with the UCLA Bruins.
He's been married to actress Pam Dawber since 1987 and they have 2 sons. His son, actor Sean Harmon, had a recurring role as a young Leeroy Jethro Gibbs on NCIS.
Media of
Mark Harmon
Photos (21)
Filmography of
Mark Harmon
Ryan
... 2025
... 2024
Self
... 2019
Lucas Davenport
... 2011
Superman (voice)
... 2010
Dale
... 2009
James Foster
... 2004
Ryan
... 2003
Jim Wesley
... 2002
... 2002
Thomas Capano
... 2001
Bruce Barkow
... 2001
Lawrence
... 2001
Charles Lattimer
... 2000
John Cooper
... 1999
Magazine Reporter
... 1998
Tommy Nance
... 1997
Jeremy Hampton
... 1997
Dominant Male
... 1995
Jack Black
... 1995
Johnathan Franye
... 1995
Mickey Knox in TV
... 1994
Sheriff Johnny Behan
... 1994
Alex Davenport
... 1992
Frank Flynn
... 1991
Charles Spencer
... 1991
Ertie Robertson
... 1991
David Shepard
... 1991
John Dillinger
... 1991
Taylor Worth
... 1989
Chance Wayne
... 1989
Billy Wyatt
... 1988
Jay Austin
... 1988
Elmer Jackson
... 1987
... 1987
Mr. Freddy Shoop
... 1987
Harry
... 1986
Ted Bundy
... 1986
Robin Prince
... 1986
Gacel Sayah
... 1984
Tommy
... 1983
Fielding Carlyle
... 1980
Larry Simpson
... 1979
Billy Joe Meynert
... 1978
Norman Brinker
... 1978
Howie Lesser
... 1978
Robert Dunlap
... 1977
Student Controller
... 1974