Mark Harmon
Mark Harmon (born September 2, 1951, in Burbank, California) is an American actor, producer and director. The son of football star Tom Harmon and actress Elyse Knox, he played college football at UCLA before turning to acting in the mid-1970s. He became known for St. Elsewhere and Chicago Hope and starred as Leroy Jethro Gibbs on NCIS from 2003 to 2021, a character introduced on JAG, also serving as a producer of the series. He received an Emmy nomination for his recurring role as Secret Service agent Simon Donovan on The West Wing, and his film work includes Summer School, The Presidio, Wyatt Earp and Freaky Friday.
Getting Married
(Howie Lesser)
Fear and Loathing in Las Vegas
(Magazine Reporter)
Freaky Friday
(Ryan)
Original Sins
(Johnathan Franye)
Justice League: Crisis on Two Earths
(Superman (voice))
Beyond the Poseidon Adventure
(Larry Simpson)
The Presidio
(Jay Austin)
Magic in the Water
(Jack Black)
Wyatt Earp
(Sheriff Johnny Behan)
Worth Winning
(Taylor Worth)
Stealing Home
(Billy Wyatt)
The Last Supper
(Dominant Male)
Crossfire Trail
(Bruce Barkow)
Comes a Horseman
(Billy Joe Meynert)
Summer School
(Freddy Shoop)
Dear America: Letters Home from Vietnam
((voice))
Local Boys
(Jim Wesley)
Weather Girl
(Dale)
Sweet Bird of Youth
(Chance Wayne)
The Deliberate Stranger
(Ted Bundy)
After the Promise
(Elmer Jackson)
Certain Prey
(Lucas Davenport)
Tuareg: Desert Warrior
(Gacel Sayah)
And Never Let Her Go
(Thomas Capano)
Cold Heaven
(Alex Davenport)
Prince of Bel Air
(Robin Prince)
For All Time
(Charles Lattimer)
Intimate Agony
(Tommy)
Shadow of a Doubt
(Charles Spencer)
Dillinger
(John Dillinger)
Eleanor and Franklin: The White House Years
(Robert Dunlap)
Long Road Home
(Ertie Robertson)
Casualties
(Tommy Nance)
Till There Was You
(Frank Flynn)
Let's Get Harry
(Harry)
Flamingo Road
(Fielding Carlyle)
Fourth Story
(David Shepard)
Little Mo
(Norman Brinker)
NCISverse: The First 1,000
(Self)
Freakier Friday
(Ryan)
Natural Born Killers
(Mickey Knox in TV)
The First to Go
(Jeremy Hampton)
Sonic Boom
(Student Controller)
The Wild
(Self)
I'll Remember April
(John Cooper)
Chasing Liberty
(James Foster)
The Amati Girls
(Lawrence)
Intimate Portrait: Pam Dawber
(Self)
St. Elsewhere
(Robert Caldwell)
The Tony Danza Show
(Self)
Jimmy Kimmel Live!
(Self)
The Rosie O'Donnell Show
(Self)
The Love Boat
(Doug Bradbury)
The Legend of Tarzan
(Bob Markham (voice))
Moonlighting
(Sam Crawford)
Flamingo Road
(Field Carlyle)
The View
(Self)
240-Robert
(Thib Thibideaux)
The Tonight Show with Jay Leno
The Hardy Boys / Nancy Drew Mysteries
From the Earth to the Moon
(Wally Schirra)
Laverne & Shirley
All's Fair
NCIS
(Leroy Jethro Gibbs)
JAG
(Leroy Jethro Gibbs)
Centennial
(Captain John McIntosh)
Hallmark Hall of Fame
(Charles)
Chicago Hope
(Jack McNeil)
Reasonable Doubts
(Det. Dicky Cobb)
Sam
(Mike Breen)
Harts of the West
Charlie Grace
(Charlie Grace)
Ozzie's Girls
The Dream Merchants
(Johnny Edge)
Saturday Night Live
(Self - Host)
The Bonnie Hunt Show
(Self)
The West Wing
(Simon Donovan)
The Late Late Show with James Corden
(Self)
Adam-12
(Officer Gus Corbin)
Goliath Awaits
(Peter Cabot)
The American West
(Self)
Police Woman
(Stanski)
The Kelly Clarkson Show
(Self)
The Tonight Show Starring Johnny Carson
(Self)
All or Nothing: The Michigan Wolverines
(Narrator (voice))
NCIS: New Orleans
(Leroy Jethro Gibbs)
The Arsenio Hall Show
(Self)
Entertainment Tonight
(Self)
Delvecchio
(Ronnie Striker)
Family Guy
(Leroy Jethro Gibbs (voice))
And Never Let Her Go
(Thomas Capano)
Joe Montana: Cool Under Pressure
(Self - Narrator (voice))
The Megan Mullally Show
(Self - Guest)
Golden Globe Awards
(Self - Nominee)
NCIS: Origins
(Older Leroy Jethro Gibbs (voice) (uncredited))
Golden Globe Awards
(Self)
Emergency!
(Ofcr. Dave Gordon)
Police Woman
(Paul Donin)
The Deliberate Stranger
(Ted Bundy)
The Late Show with Stephen Colbert
(Self - Guest)
Strangers
(Mark)
Steve Harvey
(Self)
NCIS: Origins
(Older Leroy Jethro Gibbs)
Laverne & Shirley
(Victor)
Stand Up to Cancer
(Self)
