Mark Harmon
Personal Info
Known for
Acting
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
Acting
(2025)
Freakier Friday
as Ryan
(2024)
NCISverse: The First 1,000
as Self
(2019)
The Wild
as Self
(2011)
Certain Prey
as Lucas Davenport
(2010)
Justice League: Crisis on Two Earths
as Clark Kent / 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)
The Amati Girls
as Lawrence
(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
(1997)
Casualties
as Tommy Nance
(1997)
The First to Go
as Jeremy Hampton
(1995)
The Last Supper
as Dominant Male
(1995)
Magic in the Water
as Jack Black
(1995)
Original Sins
as Johnathan Franye
(1994)
Natural Born Killers
as Mickey Knox in TV
(1994)
Wyatt Earp
as Sheriff Johnny Behan
(1992)
Cold Heaven
as Alex Davenport
(1991)
Dillinger
as John Dillinger
(1991)
Fourth Story
as David Shepard
(1991)
Till There Was You
as Frank Flynn
(1991)
Long Road Home
as Ertie Robertson
(1991)
Shadow of a Doubt
as Charles Spencer
(1989)
Worth Winning
as Taylor Worth
(1989)
Sweet Bird of Youth
as Chance Wayne
(1988)
The Presidio
as Jay Austin
(1988)
Stealing Home
as Billy Wyatt
(1987)
Summer School
as Mr. Freddy Shoop
(1987)
After the Promise
as Elmer Jackson
(1987)
Dear America: Letters Home from Vietnam
as (voice)
(1986)
Let's Get Harry
as Harry
(1986)
The Deliberate Stranger
as Ted Bundy
(1986)
Prince of Bel Air
as Robin Prince
(1984)
Tuareg: Desert Warrior
as Gacel Sayah
(1983)
Intimate Agony
as Tommy
(1980)
Flamingo Road
as Fielding Carlyle
(1979)
Beyond the Poseidon Adventure
as Larry Simpson
(1978)
Comes a Horseman
as Billy Joe Meynert
(1978)
Getting Married
as Howie Lesser
(1978)
Little Mo
as Norman Brinker
(1977)
Eleanor and Franklin: The White House Years
as Robert Dunlap
(1974)
Sonic Boom
as Student Controller
Crew
(2011)
Certain Prey
Executive Producer