Mark Harmon
Born in Burbank, California, USA — Sep 02 1951
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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…
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Mark Harmon's Credits
Browse acting and crew credits across movies and TV — filter and sort to find specific roles.
NCIS
Leroy Jethro Gibbs
Family Guy
Leroy Jethro Gibbs (voice)
JAG
Leroy Jethro Gibbs
The West Wing
Simon Donovan
Chicago Hope
Jack McNeil
The Love Boat
Doug Bradbury
Emergency!
Ofcr. Dave Gordon
Adam-12
Officer Gus Corbin
St. Elsewhere
Robert Caldwell
Moonlighting
Sam Crawford
NCIS: New Orleans
Leroy Jethro Gibbs
Police Woman
Stanski
Boston Public
Directing
Laverne & Shirley
From the Earth to the Moon
Wally Schirra
NCIS: Origins
Older Leroy Jethro Gibbs (voice) (uncredited)
The Hardy Boys / Nancy Drew Mysteries
The Legend of Tarzan
Bob Markham (voice)
Reasonable Doubts
Det. Dicky Cobb
Centennial
Captain John McIntosh
Freakier Friday
Ryan
Charlie Grace
Charlie Grace
240-Robert
Thib Thibideaux
Flamingo Road
Field Carlyle
Delvecchio
Ronnie Striker
Natural Born Killers
Mickey Knox in TV
Freaky Friday
Ryan
Goliath Awaits
Peter Cabot
Hallmark Hall of Fame
Charles
Fear and Loathing in Las Vegas
Magazine Reporter
Harts of the West
The Presidio
Jay Austin
Wyatt Earp
Sheriff Johnny Behan
All's Fair
Justice League: Crisis on Two Earths
Superman (voice)
Summer School
Mr. Freddy Shoop
The American West
Self
The Dream Merchants
Johnny Edge
Joe Montana: Cool Under Pressure
Self - Narrator (voice)
Chasing Liberty
James Foster
The Deliberate Stranger
Ted Bundy
Ozzie's Girls
Comes a Horseman
Billy Joe Meynert
Beyond the Poseidon Adventure
Larry Simpson
Crossfire Trail
Bruce Barkow
Sam
Mike Breen
Let's Get Harry
Harry
The Last Supper
Dominant Male
After the Promise
Elmer Jackson
And Never Let Her Go
Thomas Capano
Stealing Home
Billy Wyatt
Intimate Agony
Tommy
Fourth Story
David Shepard
Weather Girl
Dale
Dear America: Letters Home from Vietnam
(voice)
Sweet Bird of Youth
Chance Wayne
Dillinger
John Dillinger
Prince of Bel Air
Robin Prince
Casualties
Tommy Nance
All or Nothing: The Michigan Wolverines
Narrator (voice)
NCISverse: The First 1,000
Self
Eleanor and Franklin: The White House Years
Robert Dunlap
Flamingo Road
Fielding Carlyle
Cold Heaven
Alex Davenport
Magic in the Water
Jack Black
Local Boys
Jim Wesley
Certain Prey
Lucas Davenport
Worth Winning
Taylor Worth
The Deliberate Stranger
Ted Bundy
Sonic Boom
Student Controller
Shadow of a Doubt
Charles Spencer
For All Time
Charles Lattimer
Tuareg: Desert Warrior
Gacel Sayah
Little Mo
Norman Brinker
Long Road Home
Ertie Robertson
Getting Married
Howie Lesser
The Wild
Self
Original Sins
Johnathan Franye
I'll Remember April
John Cooper
The Amati Girls
Lawrence
The First to Go
Jeremy Hampton
Till There Was You
Frank Flynn
And Never Let Her Go
Thomas Capano
Intimate Portrait: Pam Dawber
Self