Mark Harmon
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.
Known For
Freakier Friday
Ryan
Freaky Friday
Ryan
Natural Born Killers
Mickey Knox in TV
Fear and Loathing in Las Vegas
Magazine Reporter
Wyatt Earp
Sheriff Johnny Behan
Summer School
Mr. Freddy Shoop
Justice League: Crisis on Two Earths
Superman (voice)
Crossfire Trail
Bruce Barkow
Chasing Liberty
James Foster
The Presidio
Jay Austin
Filmography — Acting
Freakier Friday
Ryan
Freaky Friday
Ryan
Natural Born Killers
Mickey Knox in TV
Fear and Loathing in Las Vegas
Magazine Reporter
Wyatt Earp
Sheriff Johnny Behan
Summer School
Mr. Freddy Shoop
Justice League: Crisis on Two Earths
Superman (voice)
Crossfire Trail
Bruce Barkow
Chasing Liberty
James Foster
The Presidio
Jay Austin
The Last Supper
Dominant Male
Dear America: Letters Home from Vietnam
(voice)
Beyond the Poseidon Adventure
Larry Simpson
The Deliberate Stranger
Ted Bundy
After the Promise
Elmer Jackson
Weather Girl
Dale
Comes a Horseman
Billy Joe Meynert
Let's Get Harry
Harry
NCISverse: The First 1,000
Self
Worth Winning
Taylor Worth
Stealing Home
Billy Wyatt
Sweet Bird of Youth
Chance Wayne
Original Sins
Johnathan Franye
Prince of Bel Air
Robin Prince
Little Mo
Norman Brinker
For All Time
Charles Lattimer
Cold Heaven
Alex Davenport
Dillinger
John Dillinger
Fourth Story
David Shepard
Tuareg: Desert Warrior
Gacel Sayah
Certain Prey
Lucas Davenport
Magic in the Water
Jack Black
I'll Remember April
John Cooper
Shadow of a Doubt
Charles Spencer
Sonic Boom
Student Controller
Eleanor and Franklin: The White House Years
Robert Dunlap
Local Boys
Jim Wesley
Casualties
Tommy Nance
Till There Was You
Frank Flynn
Flamingo Road
Fielding Carlyle
Intimate Agony
Tommy
And Never Let Her Go
Thomas Capano
The Amati Girls
Lawrence
Getting Married
Howie Lesser
The First to Go
Jeremy Hampton
Intimate Portrait: Pam Dawber
Self
Long Road Home
Ertie Robertson
The Wild
Self