Mark Harmon

Personal Info

Known For Actor

Gender Male

Birthday 1951-09-02 (73 years old)

Place of Birth Burbank, California, USA

Mark Harmon

Biography

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

Actor

2025
2024
NCIS: Origins

as Older Leroy Jethro Gibbs (uncredited)

2024
NCIS: Origins

as Older Leroy Jethro Gibbs (voice) (uncredited)

2022
2019
The Wild

as Self

2016
2014
NCIS: New Orleans

as Leroy Jethro Gibbs

2011
Certain Prey

as Lucas Davenport

2010
Justice League: Crisis on Two Earths

as Clark Kent / Superman (voice)

2009
Weather Girl

as Dale

2006
The Megan Mullally Show

as Self - Guest

2004
Chasing Liberty

as James Foster

2003
2003
NCIS

as Leroy Jethro Gibbs

2002
Local Boys

as Jim Wesley

2001
I'll Remember April

as John Cooper

2001
And Never Let Her Go

as Thomas Capano

2001
Crossfire Trail

as Bruce Barkow

2001
The Amati Girls

as Lawrence

2001
The Legend of Tarzan

as Bob Markham (voice)

2001
And Never Let Her Go

as Thomas Capano

2000
For All Time

as Charles Lattimer

1999
The West Wing

as Simon Donovan

1999
Family Guy

as Leroy Jethro Gibbs (voice)

1998
Fear and Loathing in Las Vegas

as Magazine Reporter

1998
1997
Casualties

as Tommy Nance

1997
The First to Go

as Jeremy Hampton

1997
The View

as Self

1995
The Last Supper

as Dominant Male

1995
Magic in the Water

as Jack Black

1995
Original Sins

as Johnathan Franye

1995
JAG

as Leroy Jethro Gibbs

1995
Charlie Grace

as Charlie Grace

1994
Natural Born Killers

as Mickey Knox in TV

1994
Wyatt Earp

as Sheriff Johnny Behan

1994
Chicago Hope

as Jack McNeil

1992
Cold Heaven

as Alex Davenport

1991
Till There Was You

as Frank Flynn

1991
Shadow of a Doubt

as Charles Spencer

1991
Long Road Home

as Ertie Robertson

1991
Fourth Story

as David Shepard

1991
Dillinger

as John Dillinger

1991
Reasonable Doubts

as Det. Dicky Cobb

1989
Worth Winning

as Taylor Worth

1989
Sweet Bird of Youth

as Chance Wayne

1988
Stealing Home

as Billy Wyatt

1988
The Presidio

as Jay Austin

1987
After the Promise

as Elmer Jackson

1987
Summer School

as Mr. Freddy Shoop

1986
1986
1986
Prince of Bel Air

as Robin Prince

1985
Moonlighting

as Sam Crawford

1984
Tuareg: Desert Warrior

as Gacel Sayah

1983
1982
St. Elsewhere

as Robert Caldwell

1981
Goliath Awaits

as Peter Cabot

1980
Flamingo Road

as Fielding Carlyle

1980
The Dream Merchants

as Johnny Edge

1979
1979
240-Robert

as Thib Thibideaux

1978
Comes a Horseman

as Billy Joe Meynert

1978
Little Mo

as Norman Brinker

1978
Getting Married

as Howie Lesser

1978
Centennial

as Captain John McIntosh

1978
Sam

as Mike Breen

1977
The Love Boat

as Doug Bradbury

1976
Delvecchio

as Ronnie Striker

1975
Saturday Night Live

as Self - Host

1974
Sonic Boom

as Student Controller

1974
Police Woman

as Stanski

1968
Adam-12

as Officer Gus Corbin

1951
1944
Golden Globe Awards

as Self - Nominee

Producer

2024
NCIS: Origins

as Executive Producer

2014
NCIS: New Orleans

as Executive Producer

2011
Certain Prey

as Executive Producer

2003
NCIS

as Executive Producer

1995
Charlie Grace

as Producer

Director

2000
Boston Public

as Director

1994
Chicago Hope

as Director