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.
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.
External links
IMDb: https://www.imdb.com/title/nm0001319
Wikipedia: https://www.wikidata.org/wiki/Q296774
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Filmography (Movies)
Freakier Friday
Character:Ryan
Release Date:06/08/2025
NCISverse: The First 1,000
Character:Self
Release Date:08/04/2024
The Wild
Character:Self
Release Date:19/05/2019
Certain Prey
Character:Lucas Davenport
Release Date:06/11/2011
Justice League: Crisis on Two Earths
Character:Superman (voice)
Release Date:23/02/2010
Weather Girl
Character:Dale
Release Date:10/07/2009
Chasing Liberty
Character:James Foster
Release Date:09/01/2004
Freaky Friday
Character:Ryan
Release Date:05/08/2003
Local Boys
Character:Jim Wesley
Release Date:23/02/2002
Intimate Portrait: Pam Dawber
Character:Self
Release Date:01/01/2002
And Never Let Her Go
Character:Thomas Capano
Release Date:01/04/2001
Crossfire Trail
Character:Bruce Barkow
Release Date:21/01/2001
The Amati Girls
Character:Lawrence
Release Date:09/01/2001
For All Time
Character:Charles Lattimer
Release Date:18/10/2000
I'll Remember April
Character:John Cooper
Release Date:05/04/1999
Fear and Loathing in Las Vegas
Character:Magazine Reporter
Release Date:22/05/1998
Casualties
Character:Tommy Nance
Release Date:15/04/1997
The First to Go
Character:Jeremy Hampton
Release Date:01/01/1997
The Last Supper
Character:Dominant Male
Release Date:08/09/1995
Magic in the Water
Character:Jack Black
Release Date:30/08/1995
Original Sins
Character:Johnathan Franye
Release Date:12/04/1995
Natural Born Killers
Character:Mickey Knox in TV
Release Date:26/08/1994
Wyatt Earp
Character:Sheriff Johnny Behan
Release Date:24/06/1994
Cold Heaven
Character:Alex Davenport
Release Date:29/05/1992
Till There Was You
Character:Frank Flynn
Release Date:18/07/1991
Shadow of a Doubt
Character:Charles Spencer
Release Date:27/04/1991
Long Road Home
Character:Ertie Robertson
Release Date:25/02/1991
Fourth Story
Character:David Shepard
Release Date:19/01/1991
Dillinger
Character:John Dillinger
Release Date:06/01/1991
Worth Winning
Character:Taylor Worth
Release Date:27/10/1989
Sweet Bird of Youth
Character:Chance Wayne
Release Date:01/10/1989
Stealing Home
Character:Billy Wyatt
Release Date:26/08/1988
The Presidio
Character:Jay Austin
Release Date:10/06/1988
After the Promise
Character:Elmer Jackson
Release Date:11/10/1987
Dear America: Letters Home from Vietnam
Character:(voice)
Release Date:01/10/1987
Summer School
Character:Mr. Freddy Shoop
Release Date:22/07/1987
Let's Get Harry
Character:Harry
Release Date:31/10/1986
The Deliberate Stranger
Character:Ted Bundy
Release Date:04/05/1986
Prince of Bel Air
Character:Robin Prince
Release Date:20/01/1986
Tuareg: Desert Warrior
Character:Gacel Sayah
Release Date:12/03/1984
Intimate Agony
Character:Tommy
Release Date:21/03/1983
Flamingo Road
Character:Fielding Carlyle
Release Date:12/05/1980
Beyond the Poseidon Adventure
Character:Larry Simpson
Release Date:18/05/1979
Comes a Horseman
Character:Billy Joe Meynert
Release Date:25/10/1978
Little Mo
Character:Norman Brinker
Release Date:05/09/1978
Getting Married
Character:Howie Lesser
Release Date:17/05/1978
Eleanor and Franklin: The White House Years
Character:Robert Dunlap
Release Date:13/03/1977
Sonic Boom
Character:Student Controller
Release Date:01/01/1974
Television Appearances
NCIS: Origins
Character:Older Leroy Jethro Gibbs (voice) (uncredited)
NCIS: Origins
Character:Older Leroy Jethro Gibbs (uncredited)
Joe Montana: Cool Under Pressure
Character:Self - Narrator (voice)
The Kelly Clarkson Show
Character:Self
All or Nothing: The Michigan Wolverines
Character:Narrator (voice)
The American West
Character:Self
The Late Late Show with James Corden
Character:Self
NCIS: New Orleans
Character:Leroy Jethro Gibbs
The Arsenio Hall Show
Character:Self
The Bonnie Hunt Show
Character:Self
The Megan Mullally Show
Character:Self - Guest
The Tony Danza Show
Character:Self
NCIS
Character:Leroy Jethro Gibbs
Jimmy Kimmel Live!
Character:Self
The Legend of Tarzan
Character:Bob Markham (voice)
And Never Let Her Go
Character:Thomas Capano
The West Wing
Character:Simon Donovan
Family Guy
Character:Leroy Jethro Gibbs (voice)
From the Earth to the Moon
Character:Wally Schirra
The View
Character:Self
The Rosie O'Donnell Show
Character:Self
JAG
Character:Leroy Jethro Gibbs
Charlie Grace
Character:Charlie Grace
Chicago Hope
Character:Jack McNeil
Harts of the West
Character:
The Tonight Show with Jay Leno
Character:
Reasonable Doubts
Character:Det. Dicky Cobb
The Deliberate Stranger
Character:Ted Bundy
Moonlighting
Character:Sam Crawford
St. Elsewhere
Character:Robert Caldwell
Goliath Awaits
Character:Peter Cabot
Entertainment Tonight
Character:Self
Flamingo Road
Character:Field Carlyle
The Dream Merchants
Character:Johnny Edge
240-Robert
Character:Thib Thibideaux
Centennial
Character:Captain John McIntosh
Sam
Character:Mike Breen
The Love Boat
Character:Doug Bradbury
The Hardy Boys / Nancy Drew Mysteries
Character:
All's Fair
Character:
Delvecchio
Character:Ronnie Striker
Laverne & Shirley
Character:
Saturday Night Live
Character:Self - Host
Police Woman
Character:Stanski
Police Woman
Character:Paul Donin
Ozzie's Girls
Character:
Emergency!
Character:Ofcr. Dave Gordon
Adam-12
Character:Officer Gus Corbin
The Tonight Show Starring Johnny Carson
Character:Self
Hallmark Hall of Fame
Character:Charles
Golden Globe Awards
Character:Self - Nominee
Golden Globe Awards
Character:Self
Images
