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Mark Harmon

Actor

Mark Harmon

Born September 2, 1951 in Burbank, California, USA44 films

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.

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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.

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The best way into Mark Harmon's work
Fear and Loathing in Las Vegas posterFirst watchFear and Loathing in Las Vegas19987.2as Magazine ReporterRaoul Duke and his attorney Dr. Gonzo drive a red convertible across the Mojave desert to Las Vegas with a suitcase full of drugs to cover a motorcycle race.View film

Essential films

Ranked by acclaim and reach
Natural Born Killers poster7.1Natural Born Killers1994Freaky Friday poster6.6Freaky Friday2003Justice League: Crisis on Two Earths poster7.3Justice League: Crisis on Two Earths2010Wyatt Earp poster6.8Wyatt Earp1994Freakier Friday poster6.8Freakier Friday2025Chasing Liberty poster6.2Chasing Liberty2004The Last Supper poster6.5The Last Supper1995Summer School poster6.4Summer School1987

Filmography

44 films as actor
  1. 2025Freakier FridayRyan
  2. 2011Certain PreyLucas Davenport
  3. 2010Justice League: Crisis on Two EarthsSuperman (voice)
  4. 2009Weather GirlDale
  5. 2004Chasing LibertyJames Foster
  6. 2003Freaky FridayRyan
  7. 2002Local BoysJim Wesley
  8. 2001And Never Let Her GoThomas Capano
  9. 2001Crossfire TrailBruce Barkow
  10. 2001The Amati GirlsLawrence
  11. 2000For All TimeCharles Lattimer
  12. 1999I'll Remember AprilJohn Cooper
  13. 1998Fear and Loathing in Las VegasMagazine Reporter
  14. 1997CasualtiesTommy Nance
  15. 1997The First to GoJeremy Hampton
  16. 1995The Last SupperDominant Male
  17. 1995Magic in the WaterJack Black
  18. 1995Original SinsJohnathan Franye
  19. 1994Natural Born KillersMickey Knox in TV
  20. 1994Wyatt EarpSheriff Johnny Behan
  21. 1992Cold HeavenAlex Davenport
  22. 1991Till There Was YouFrank Flynn
  23. 1991Shadow of a DoubtCharles Spencer
  24. 1991Long Road HomeErtie Robertson
  25. 1991Fourth StoryDavid Shepard
  26. 1991DillingerJohn Dillinger
  27. 1989Worth WinningTaylor Worth
  28. 1989Sweet Bird of YouthChance Wayne
  29. 1988Stealing HomeBilly Wyatt
  30. 1988The PresidioJay Austin
  31. 1987After the PromiseElmer Jackson
  32. 1987Summer SchoolFreddy Shoop
  33. 1986Let's Get HarryHarry
  34. 1986The Deliberate StrangerTed Bundy
  35. 1986Prince of Bel AirRobin Prince
  36. 1984Tuareg: Desert WarriorGacel Sayah
  37. 1983Intimate AgonyTommy
  38. 1980Flamingo RoadFielding Carlyle
  39. 1979Beyond the Poseidon AdventureLarry Simpson
  40. 1978Comes a HorsemanBilly Joe Meynert
  41. 1978Little MoNorman Brinker
  42. 1978Getting MarriedHowie Lesser
  43. 1977Eleanor and Franklin: The White House YearsRobert Dunlap
  44. 1974Sonic BoomStudent Controller