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Mark Harmon
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 wh…
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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.
Filmography
Movies and shows, newest first
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2025
Freakier Friday
Movie Ryan
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2024
NCIS: Origins
TV show Older Leroy Jethro Gibbs (voice) (uncredited)
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2024
NCISverse: The First 1,000
Movie Self
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2022
Joe Montana: Cool Under Pressure
TV show Self - Narrator (voice)
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2019
The Kelly Clarkson Show
TV show Self
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2019
The Wild
Movie Self
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2018
All or Nothing: The Michigan Wolverines
TV show Narrator (voice)
-
2016
The American West
TV show Self
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2015
The Late Show with Stephen Colbert
TV show Self - Guest
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2015
The Late Late Show with James Corden
TV show Self
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2014
NCIS: New Orleans
TV show Leroy Jethro Gibbs
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2013
The Arsenio Hall Show
TV show Self
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2012
Steve Harvey
TV show Self
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2011
Certain Prey
Movie Lucas Davenport
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2010
Justice League: Crisis on Two Earths
Movie Superman (voice)
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2009
Weather Girl
Movie Dale
More credits
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2008
The Bonnie Hunt Show
TV show Self
-
2006
The Megan Mullally Show
TV show Self - Guest
-
2004
The Tony Danza Show
TV show Self
-
2004
Chasing Liberty
Movie James Foster
-
2003
NCIS
TV show Leroy Jethro Gibbs
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2003
Freaky Friday
Movie Ryan
-
2003
Jimmy Kimmel Live!
TV show Self
-
2002
Local Boys
Movie Jim Wesley
-
2002
Intimate Portrait: Pam Dawber
Movie Self
-
2001
The Legend of Tarzan
TV show Bob Markham (voice)
-
2001
And Never Let Her Go
Movie Thomas Capano
-
2001
And Never Let Her Go
TV show Thomas Capano
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2001
Crossfire Trail
Movie Bruce Barkow
-
2001
The Amati Girls
Movie Lawrence
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2000
Boston Public
TV show Director
-
2000
For All Time
Movie Charles Lattimer
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1999
The West Wing
TV show Simon Donovan
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1999
I'll Remember April
Movie John Cooper
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1999
Family Guy
TV show Leroy Jethro Gibbs (voice)
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1998
Fear and Loathing in Las Vegas
Movie Magazine Reporter
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1998
From the Earth to the Moon
TV show Wally Schirra
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1997
The View
TV show Self
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1997
Casualties
Movie Tommy Nance
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1997
The First to Go
Movie Jeremy Hampton
