Mark Harmon
Known for
American actor with a long and prolific career, a symbol of the television leading man. He came to prominence in film with 'Summer School' (1987) and worked in 'The Presidio' (1988) and Oliver Stone's acclaimed 'Natural Born Killers' (1994). His most recognized role came with CBS's series 'NCIS' (2003-2021) as agent Leroy Jethro Gibbs, one of the most watched procedurals in American television history, which he also produced. American actor and producer identified with television fiction, recognized for his serene, authoritative presence and for playing one of the most beloved characters in recent television.
Mark Harmon
26 Movies
27 Series
American actor with a long and prolific career, a symbol of the television leading man. He came to prominence in film with 'Summer School' (1987) and worked in 'The Presidio' (1988) and Oliver Stone's acclaimed 'Natural Born Killers' (1994). His most recognized role came with CBS's series 'NCIS' (2003-2021) as agent Leroy Jethro Gibbs, one of the most watched procedurals in American television history, which he also produced. American actor and producer identified with television fiction, recognized for his serene, authoritative presence and for playing one of the most beloved characters in recent television.
Movies
Plays Magazine Reporter
Fear and Loathing in Las Vegas
1998
Plays Ryan
Freaky Friday
2003
Plays Mickey Knox in TV
Natural Born Killers
1994
Plays Ryan
Freakier Friday
2025
Plays Sheriff Johnny Behan
Wyatt Earp
1994
Plays Jack Black
Magic in the Water
1995
Plays Alex Davenport
Cold Heaven
1992
Plays Superman (voice)
Justice League: Crisis on Two Earths
2010
Plays James Foster
Chasing Liberty
2004
Plays Jim Wesley
Local Boys
2002
Plays Dale
Weather Girl
2009
Plays Billy Joe Meynert
Comes a Horseman
1978
Plays Larry Simpson
Beyond the Poseidon Adventure
1979
Plays Freddy Shoop
Summer School
1987
Plays Jay Austin
The Presidio
1988
Plays Dominant Male
The Last Supper
1995
Plays Norman Brinker
Little Mo
1978
Plays Tommy Nance
Casualties
1997
Plays Billy Wyatt
Stealing Home
1988
Plays Harry
Let's Get Harry
1986
Plays Gacel Sayah
Tuareg: Desert Warrior
1984
Plays John Cooper
I'll Remember April
1999
Plays Taylor Worth
Worth Winning
1989
Plays Frank Flynn
Till There Was You
1991
Plays Student Controller
Sonic Boom
1974
TV Shows
Producer
Plays Leroy Jethro Gibbs
NCIS
2003
Plays Robert Caldwell
St. Elsewhere
1982
Plays Det. Dicky Cobb
Reasonable Doubts
1991
Plays Thib Thibideaux
240-Robert
1979
Plays Captain John McIntosh
Centennial
1978
Producer
Plays Charlie Grace
Charlie Grace
1995
Plays Self
The American West
2016
Plays Mike Breen
Sam
1978
Plays Sam Crawford
Moonlighting
1985
Plays Simon Donovan
The West Wing
1999
Producer
Plays Leroy Jethro Gibbs
NCIS: New Orleans
2014
Plays Johnny Edge
The Dream Merchants
1980
Plays Doug Bradbury
The Love Boat
1977
Plays Thomas Capano
And Never Let Her Go
2001
Plays Ted Bundy
The Deliberate Stranger
1986
Plays Peter Cabot
Goliath Awaits
1981
Plays Leroy Jethro Gibbs
JAG
1995
Plays Stanski
Police Woman
1974
Plays Mark
Strangers
1996
Plays Bob Markham (voice)
The Legend of Tarzan
2001
Plays Wally Schirra
From the Earth to the Moon
1998
Plays Charles
Hallmark Hall of Fame
1951
Plays Officer Gus Corbin
Adam-12
1968
Plays Ronnie Striker
Delvecchio
1976
Plays Leroy Jethro Gibbs (voice)
Family Guy
1999
Plays Ofcr. Dave Gordon
Emergency!
1972
Latest Trailers
Watch Trailer
Freakier Friday
Full Filmography
Freakier Friday
Ryan
2025
Film
NCIS: Origins
Older Leroy Jethro Gibbs (voice) (uncredited) · 27 episodes
2024–
TV
The American West
Self · 8 episodes
2016–
TV
NCIS: New Orleans
Leroy Jethro Gibbs · 4 episodes
2014–
TV
Justice League: Crisis on Two Earths
Superman (voice)
2010
Film
Weather Girl
Dale
2009
Film
Chasing Liberty
James Foster
2004
Film
NCIS
Leroy Jethro Gibbs · 435 episodes
2003–
TV
Freaky Friday
Ryan
2003
Film
Photos
Frequently Asked Questions
How old is Mark Harmon and where are they from?
Mark Harmon is 75 years old, born on September 2, 1951 in Burbank, California, USA.
What are the most famous roles of Mark Harmon?
Mark Harmon is best known for roles in Fear and Loathing in Las Vegas, Freaky Friday, Natural Born Killers.
How many movies has Mark Harmon been in?
Over a 52-year career (since 1974), Mark Harmon has appeared in 26 movies and 26 TV shows.
What was Mark Harmon's first movie?
The career of Mark Harmon began with Sonic Boom (1974).
What is Mark Harmon's most recent movie or series?
Mark Harmon's most recent release is Freakier Friday, which premiered on August 6, 2025.
What TV shows has Mark Harmon appeared in?
On television, Mark Harmon has appeared in Family Guy, NCIS, The West Wing, Saturday Night Live.
Mark Harmon
1951-09-02 · 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 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.