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Mark Harmon
Known for: ActingThomas 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.
Filmography 34
Chicago Hope
as Jack McNeil 
NCIS: Origins
as Older Leroy Jethro Gibbs 
Raju reede
as Ryan 
Rajum reede
as Ryan 
Centennial
as Captain John McIntosh 
Ratastel Las Vegasesse
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as Magazine Reporter 
Wyatt Earp
as Sheriff Johnny Behan 
Stealing Home
as Billy Wyatt 
Chasing Liberty
as James Foster 
Justice League: Crisis on Two Earths
as Superman (voice) 
Crossfire Trail
as Bruce Barkow 
Summer School
as Freddy Shoop 
Beyond the Poseidon Adventure
as Larry Simpson 
Joe Montana: Cool Under Pressure
as Self - Narrator (voice) 
The Last Supper
as Dominant Male 
The Presidio
as Jay Austin 
Magic in the Water
as Jack Black 
And Never Let Her Go
as Thomas Capano 
All or Nothing: The Michigan Wolverines
as Narrator (voice) 
Comes a Horseman
as Billy Joe Meynert 
Worth Winning
as Taylor Worth 
Prince of Bel Air
as Robin Prince 
Weather Girl
as Dale 
Let's Get Harry
as Harry 
Sweet Bird of Youth
as Chance Wayne 
Cold Heaven
as Alex Davenport 
Tuareg: Desert Warrior
as Gacel Sayah 
Local Boys
as Jim Wesley 
After the Promise
as Elmer Jackson 
Certain Prey
as Lucas Davenport 
I'll Remember April
as John Cooper 
Casualties
as Tommy Nance 
Sonic Boom
as Student Controller 
Intimate Agony
as Tommy