Mark Harmon
- Known for
- Acting
- Born
- September 2, 1951
- Birthplace
- Burbank, California, USA
Mark Harmon (born September 2, 1951, in Burbank, California) is an American actor, producer and director. The son of football star Tom Harmon and actress Elyse Knox, he played college football at UCLA before turning to acting in the mid-1970s. He became known for St. Elsewhere and Chicago Hope and starred as Leroy Jethro Gibbs on NCIS from 2003 to 2021, a character introduced on JAG, also serving as a producer of the series. He received an Emmy nomination for his recurring role as Secret Service agent Simon Donovan on The West Wing, and his film work includes Summer School, The Presidio, Wyatt Earp and Freaky Friday.
Filmography
Freakier Friday 2025
as Ryan
NCISverse: The First 1,000 2024
as Self
The Wild 2019
as Self
Certain Prey 2011
as Lucas Davenport, Executive Producer
Justice League: Crisis on Two Earths 2010
as Superman (voice)
Weather Girl 2009
as Dale
Chasing Liberty 2004
as James Foster
Freaky Friday 2003
as Ryan
Local Boys 2002
as Jim Wesley
- Intimate Portrait: Pam Dawber
Intimate Portrait: Pam Dawber 2002
as Self
And Never Let Her Go 2001
as Thomas Capano
Crossfire Trail 2001
as Bruce Barkow
The Amati Girls 2001
as Lawrence
For All Time 2000
as Charles Lattimer
I'll Remember April 1999
as John Cooper
Fear and Loathing in Las Vegas 1998
as Magazine Reporter
Casualties 1997
as Tommy Nance
The First to Go 1997
as Jeremy Hampton
The Last Supper 1995
as Dominant Male
Magic in the Water 1995
as Jack Black
Original Sins 1995
as Johnathan Franye
Natural Born Killers 1994
as Mickey Knox in TV
Wyatt Earp 1994
as Sheriff Johnny Behan
Cold Heaven 1992
as Alex Davenport
Till There Was You 1991
as Frank Flynn
- Shadow of a Doubt
Shadow of a Doubt 1991
as Charles Spencer
Long Road Home 1991
as Ertie Robertson
Fourth Story 1991
as David Shepard
Dillinger 1991
as John Dillinger
Worth Winning 1989
as Taylor Worth
Sweet Bird of Youth 1989
as Chance Wayne
Stealing Home 1988
as Billy Wyatt
The Presidio 1988
as Jay Austin
After the Promise 1987
as Elmer Jackson
Dear America: Letters Home from Vietnam 1987
as (voice)
Summer School 1987
as Freddy Shoop
Let's Get Harry 1986
as Harry
The Deliberate Stranger 1986
as Ted Bundy
Prince of Bel Air 1986
as Robin Prince
Tuareg: Desert Warrior 1984
as Gacel Sayah
Intimate Agony 1983
as Tommy
Flamingo Road 1980
as Fielding Carlyle
Beyond the Poseidon Adventure 1979
as Larry Simpson
Comes a Horseman 1978
as Billy Joe Meynert
Little Mo 1978
as Norman Brinker
Getting Married 1978
as Howie Lesser
- Eleanor and Franklin: The White House Years
Eleanor and Franklin: The White House Years 1977
as Robert Dunlap
Sonic Boom 1974
as Student Controller
Credits from TMDB.