Mark Harmon
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
Credits
- 2025 ·Freakier Fridayas Ryan
- 2024 ·NCIS: Originsas Older Leroy Jethro Gibbs (uncredited)
- 2024 ·NCIS: Originsas Older Leroy Jethro Gibbs (voice) (uncredited)
- 2024 ·NCISverse: The First 1,000as Self
- 2022 ·Joe Montana: Cool Under Pressureas Self - Narrator (voice)
- 2019 ·The Kelly Clarkson Showas Self
- 2019 ·The Wildas Self
- 2018 ·All or Nothing: The Michigan Wolverinesas Narrator (voice)
- 2016 ·The American Westas Self
- 2015 ·The Late Late Show with James Cordenas Self
- 2014 ·NCIS: New Orleansas Leroy Jethro Gibbs
- 2013 ·The Arsenio Hall Showas Self
- 2011 ·Certain Preyas Lucas Davenport
- 2010 ·Justice League: Crisis on Two Earthsas Clark Kent / Superman (voice)
- 2009 ·Weather Girlas Dale
- 2008 ·The Bonnie Hunt Showas
- 2006 ·The Megan Mullally Showas Self - Guest
- 2004 ·The Tony Danza Showas Self
- 2004 ·Chasing Libertyas James Foster
- 2003 ·NCISas Leroy Jethro Gibbs
- 2003 ·Freaky Fridayas Ryan
- 2003 ·Jimmy Kimmel Live!as
- 2002 ·Local Boysas Jim Wesley
- 2002 ·Intimate Portrait: Pam Dawberas Self
- 2001 ·The Legend of Tarzanas Bob Markham (voice)
- 2001 ·And Never Let Her Goas Thomas Capano
- 2001 ·And Never Let Her Goas Thomas Capano
- 2001 ·Crossfire Trailas Bruce Barkow
- 2001 ·The Amati Girlsas Lawrence
- 2000 ·For All Timeas Charles Lattimer
- 1999 ·The West Wingas Simon Donovan
- 1999 ·I'll Remember Aprilas John Cooper
- 1999 ·Family Guyas Leroy Jethro Gibbs (voice)
- 1998 ·Fear and Loathing in Las Vegasas Magazine Reporter
- 1998 ·From the Earth to the Moonas Wally Schirra
- 1997 ·The Viewas Self
- 1997 ·Casualtiesas Tommy Nance
- 1997 ·The First to Goas Jeremy Hampton
- 1996 ·The Rosie O'Donnell Showas Self
- 1995 ·JAGas Leroy Jethro Gibbs
- 1995 ·Charlie Graceas Charlie Grace
- 1995 ·The Last Supperas Dominant Male
- 1995 ·Magic in the Wateras Jack Black
- 1995 ·Original Sinsas Johnathan Franye
- 1994 ·Chicago Hopeas Jack McNeil
- 1994 ·Natural Born Killersas Mickey Knox in TV
- 1994 ·Wyatt Earpas Sheriff Johnny Behan
- 1993 ·Harts of the Westas
- 1992 ·Cold Heavenas Alex Davenport
- 1992 ·The Tonight Show with Jay Lenoas
- 1991 ·Reasonable Doubtsas Det. Dicky Cobb
- 1991 ·Till There Was Youas Frank Flynn
- 1991 ·Shadow of a Doubtas Charles Spencer
- 1991 ·Long Road Homeas Ertie Robertson
- 1991 ·Fourth Storyas David Shepard
- 1991 ·Dillingeras John Dillinger
- 1989 ·Worth Winningas Taylor Worth
- 1989 ·Sweet Bird of Youthas Chance Wayne
- 1988 ·Stealing Homeas Billy Wyatt
- 1988 ·The Presidioas Jay Austin
- 1987 ·After the Promiseas Elmer Jackson
- 1987 ·Dear America: Letters Home from Vietnamas (voice)
- 1987 ·Summer Schoolas Mr. Freddy Shoop
- 1986 ·Let's Get Harryas Harry
- 1986 ·The Deliberate Strangeras Ted Bundy
- 1986 ·Prince of Bel Airas Robin Prince
- 1985 ·Moonlightingas Sam Crawford
- 1984 ·Tuareg: Desert Warrioras Gacel Sayah
- 1983 ·Intimate Agonyas Tommy
- 1982 ·St. Elsewhereas Robert Caldwell
- 1981 ·Goliath Awaitsas Peter Cabot
- 1981 ·Entertainment Tonightas Self
- 1981 ·Flamingo Roadas
- 1980 ·The Dream Merchantsas Johnny Edge
- 1980 ·Flamingo Roadas Fielding Carlyle
- 1979 ·240-Robertas Thib Thibideaux
- 1979 ·Beyond the Poseidon Adventureas Larry Simpson
- 1978 ·Comes a Horsemanas Billy Joe Meynert
- 1978 ·Centennialas Captain John McIntosh
- 1978 ·Little Moas Norman Brinker
- 1978 ·Getting Marriedas Howie Lesser
- 1978 ·Samas Mike Breen
- 1977 ·The Love Boatas Doug Bradbury
- 1977 ·Eleanor and Franklin: The White House Yearsas Robert Dunlap
- 1977 ·The Hardy Boys / Nancy Drew Mysteriesas
- 1976 ·All's Fairas
- 1976 ·Delvecchioas Ronnie Striker
- 1976 ·Laverne & Shirleyas
- 1975 ·Saturday Night Liveas Self - Host
- 1974 ·Police Womanas
- 1974 ·Police Womanas Stanski
- 1974 ·Sonic Boomas Student Controller
- 1973 ·Ozzie's Girlsas
- 1972 ·Emergency!as Ofcr. Dave Gordon
- 1968 ·Adam-12as Officer Gus Corbin
- 1962 ·The Tonight Show Starring Johnny Carsonas Self
- 1951 ·Hallmark Hall of Fameas Charles
- 1944 ·Golden Globe Awardsas Self - Nominee
- 1944 ·Golden Globe Awardsas Self