Mark Harmon
American actor, producer, and director celebrated for his long-running portrayal of Leroy Jethro Gibbs on the hit CBS drama NCIS.
Mark Harmon - Personal Information
- Name: Mark Harmon
- Date of Birth: September 2, 1951
- Place of Birth: Burbank, California, USA
- Gender: Male
- Job Title: Actor
- Crew Jobs: Executive Producer, Director, Producer
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.
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.
Selected Filmography
A look at Mark Harmon's most notable recent screen appearances across film and television.
- Freakier Friday (2025) as Ryan
- NCIS: Origins (TV - 2024) as Older Leroy Jethro Gibbs (voice) (uncredited)
- NCIS: Origins (TV - 2024) as Older Leroy Jethro Gibbs (uncredited)
- NCISverse: The First 1,000 (2024) as Self
- Joe Montana: Cool Under Pressure (TV - 2022) as Self - Narrator (voice)
- The Kelly Clarkson Show (TV - 2019) as Self
- The Wild (2019) as Self
- All or Nothing: The Michigan Wolverines (TV - 2018) as Narrator (voice)
- The American West (TV - 2016) as Self
- The Late Show with Stephen Colbert (TV - 2015) as Self - Guest
External Links
Explore Mark Harmon's profiles on leading entertainment and reference platforms.