Mark Harmon
45 movies · 34 TV shows
- Known for
- Acting
- Born
- Sep 2, 1951 (age 75)
- Place of birth
- Burbank, California, USA
- Also known as
- Thomas 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.
Read the full biography
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.
Profiles IMDb
Known for
Mark Harmon: movies and TV shows
Acting (78)
- 2025 Freakier Friday
as Ryan
- 2024 NCIS: Origins · TV
as Older Leroy Jethro Gibbs (voice) (uncredited) / Older Leroy Jethro Gibbs (uncredited) / Older Leroy Jethro Gibbs · 22 episodes
- 2014
- 2011 Certain Prey
as Lucas Davenport
- 2010 Justice League: Crisis on Two Earths
as Superman (voice)
- 2009 Weather Girl
as Dale
- 2004 Chasing Liberty
as James Foster
- 2003
- 2003 Freaky Friday
as Ryan
- 2002 Local Boys
as Jim Wesley
- 2001
- 2001 And Never Let Her Go
as Thomas Capano
- 2001
- 2001 Crossfire Trail
as Bruce Barkow
- 2001 The Amati Girls
as Lawrence
- 2000 For All Time
as Charles Lattimer
- 1999
- 1999 I'll Remember April
as John Cooper
- 1999
- 1998 Fear and Loathing in Las Vegas
as Magazine Reporter
- 1998
- 1997 Casualties
as Tommy Nance
- 1997 The First to Go
as Jeremy Hampton
- 1996
- 1995
- 1995
- 1995 The Last Supper
as Dominant Male
- 1995 Magic in the Water
as Jack Black
- 1995 Original Sins
as Johnathan Franye
- 1994
- 1994 Natural Born Killers
as Mickey Knox in TV
- 1994 Wyatt Earp
as Sheriff Johnny Behan
- 1993
- 1992 Cold Heaven
as Alex Davenport
- 1991
- 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
- 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 Dear America: Letters Home from Vietnam
as (voice)
- 1987 Summer School
as Freddy Shoop
- 1986 Let's Get Harry
as Harry
- 1986 The Deliberate Stranger
as Ted Bundy
- 1986
- 1986 Prince of Bel Air
as Robin Prince
- 1985
- 1984 Tuareg: Desert Warrior
as Gacel Sayah
- 1983 Intimate Agony
as Tommy
- 1982
- 1981
- 1981
- 1980 Flamingo Road
as Fielding Carlyle
- 1980
- 1979
- 1979 Beyond the Poseidon Adventure
as Larry Simpson
- 1978 Comes a Horseman
as Billy Joe Meynert
- 1978
- 1978 Little Mo
as Norman Brinker
- 1978 Getting Married
as Howie Lesser
- 1978
- 1977
- 1977 Eleanor and Franklin: The White House Years
as Robert Dunlap
- 1977
- 1976
- 1976
- 1976
- 1974
- 1974 Sonic Boom
as Student Controller
- 1973
- 1972
- 1968
- 1951
Behind the camera (7)
- 2024
- 2014
- 2011 Certain Prey
Executive Producer
- 2003
- 2000
- 1995
- 1994
Talk shows and appearances (22)
- 2024
- 2022 Joe Montana: Cool Under Pressure
6 episodes
- 2019 The Kelly Clarkson Show
1 episode
- 2019
- 2018 All or Nothing: The Michigan Wolverines
8 episodes
- 2016 The American West
8 episodes
- 2015 The Late Show with Stephen Colbert
1 episode
- 2015 The Late Late Show with James Corden
1 episode
- 2013 The Arsenio Hall Show
1 episode
- 2012 Steve Harvey
1 episode
- 2008 The Bonnie Hunt Show
1 episode
- 2006 The Megan Mullally Show
1 episode
- 2004 The Tony Danza Show
1 episode
- 2003 Jimmy Kimmel Live!
1 episode
- 2002
- 1997 The View
1 episode
- 1996 The Rosie O'Donnell Show
1 episode
- 1992 The Tonight Show with Jay Leno
1 episode
- 1981 Entertainment Tonight
1 episode
- 1975 Saturday Night Live
1 episode
- 1962 The Tonight Show Starring Johnny Carson
1 episode
- 1944 Golden Globe Awards
4 episodes