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Mark Harmon

Mark Harmon

Birthday: 1951-09-02 | Place of Birth: 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. 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.

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Known For

Acting

Year
Title

Role

2025
Freakier Friday

as    Ryan

2024
2022
Joe Montana: Cool Under Pressure

as    Self - Narrator (voice)

2019
The Wild

as    Self

2018
All or Nothing: The Michigan Wolverines

as    Narrator (voice)

2011
Certain Prey

as    Lucas Davenport

2010
Justice League: Crisis on Two Earths

as    Superman (voice)

2009
Weather Girl

as    Dale

2004
Chasing Liberty

as    James Foster

2003
Freaky Friday

as    Ryan

2002
Local Boys

as    Jim Wesley

2002
2001
Crossfire Trail

as    Bruce Barkow

2001
And Never Let Her Go

as    Thomas Capano

2001
And Never Let Her Go

as    Thomas Capano

2000
For All Time

as    Charles Lattimer

1999
I'll Remember April

as    John Cooper

1998
Fear and Loathing in Las Vegas

as    Magazine Reporter

1998
Casualties

as    Tommy Nance

1997
The First to Go

as    Jeremy Hampton

1996
The Last Supper

as    Dominant Male

1995
Charlie Grace

as    Charlie Grace

1995
Magic in the Water

as    Jack Black

1995
Original Sins

as    Johnathan Franye

1994
Chicago Hope

as    Jack McNeil

1994
Wyatt Earp

as    Sheriff Johnny Behan

1992
Cold Heaven

as    Alex Davenport

1991
Reasonable Doubts

as    Det. Dicky Cobb