Mark Harmon
Actor
- Born
- September 2, 1951 (age 75) · Burbank, California, USA
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.
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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
Fear and Loathing in Las Vegas
May 22, 1998
Freaky Friday
August 5, 2003
Natural Born Killers
August 26, 1994
Wyatt Earp
June 24, 1994
Freakier Friday
August 6, 2025
Justice League: Crisis on Two Earths
February 23, 2010
Chasing Liberty
January 9, 2004
The Presidio
June 10, 1988
The Last Supper
September 8, 1995
Summer School
July 22, 1987
Beyond the Poseidon Adventure
May 18, 1979
Comes a Horseman
October 25, 1978
Acting48
- 2025Freakier Friday as Ryan
- 2024NCISverse: The First 1,000 as Self
- 2019The Wild as Self
- 2011Certain Prey as Lucas Davenport
- 2010Justice League: Crisis on Two Earths as Superman (voice)
- 2009Weather Girl as Dale
- 2004Chasing Liberty as James Foster
- 2003Freaky Friday as Ryan
- 2002Local Boys as Jim Wesley
- 2002Intimate Portrait: Pam Dawber