About
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,...
Known for
NCISSeries • 2003
Family GuySeries • 1999
JAGSeries • 1995
The Love BoatSeries • 1977
The West WingSeries • 1999
Chicago HopeSeries • 1994
Adam-12Series • 1968
NCIS: New OrleansSeries • 2014
St. ElsewhereSeries • 1982
Emergency!Series • 1972
Boston PublicSeries • 2000
Police WomanSeries • 1974
MoonlightingSeries • 1985
Laverne & ShirleySeries • 1976
NCIS: OriginsSeries • 2024
The Legend of TarzanSeries • 2001
The Hardy Boys / Nancy Drew MysteriesSeries • 1977
Freaky FridayMovie • 2003
Fear and Loathing in Las VegasMovie • 1998
Natural Born KillersMovie • 1994
Freakier FridayMovie • 2025
From the Earth to the MoonSeries • 1998
CentennialSeries • 1978
Flamingo RoadSeries • 1981