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Mark Harmon

Born 1951-09-02

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.

Known for

Freakier Friday 2025 · 6.1 Fear and Loathing in Las Vegas 1998 · 7.5 Freaky Friday 2003 · 6.4 Wyatt Earp 1994 · 6.7 Chasing Liberty 2004 · 6.1 Justice League: Crisis on Two Earths 2010 · 7.3 Summer School 1987 · 6.6 The Presidio 1988 · 6.0 The Last Supper 1995 · 6.7 NCIS: Origins 2024 · 7.5 Magic in the Water 1995 · 5.4 Worth Winning 1989 · 5.7 Let's Get Harry 1986 · 5.2 Local Boys 2002 · 6.5 Prince of Bel Air 1986 · 5.6