Portrait of Mark Harmon

Mark Harmon

Bio: 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
Born: Sun, Sep 02 1951
Birthplace: Burbank, California, USA
Mark Harmon is 73 years old
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Acting Roles
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Movies (Acting Roles)

Sorted by Release Date
Poster of Freakier Friday
Freakier Friday
Mark Harmon will be 73 in Freakier Friday as 'Ryan'.
Movie Released: Wed, Aug 06 2025
Poster of NCISverse: The First 1,000
NCISverse: The First 1,000
Mark Harmon was 72 in NCISverse: The First 1,000 as 'Self'.
Movie Released: Mon, Apr 08 2024
Poster of The Wild
The Wild
Mark Harmon was 67 in The Wild as 'Self'.
Movie Released: Sun, May 19 2019
Poster of Certain Prey
Certain Prey
Mark Harmon was 60 in Certain Prey as 'Lucas Davenport'.
Movie Released: Sun, Nov 06 2011
Poster of Justice League: Crisis on Two Earths
Justice League: Crisis on Two Earths
Mark Harmon was 58 in Justice League: Crisis on Two Earths as 'Clark Kent / Superman (voice)'.
Movie Released: Tue, Feb 23 2010
Poster of Weather Girl
Weather Girl
Mark Harmon was 57 in Weather Girl as 'Dale'.
Movie Released: Fri, Jul 10 2009
Poster of Chasing Liberty
Chasing Liberty
Mark Harmon was 52 in Chasing Liberty as 'James Foster'.
Movie Released: Fri, Jan 09 2004
Poster of Freaky Friday
Freaky Friday
Mark Harmon was 51 in Freaky Friday as 'Ryan'.
Movie Released: Tue, Aug 05 2003
Poster of Local Boys
Local Boys
Mark Harmon was 50 in Local Boys as 'Jim Wesley'.
Movie Released: Sat, Feb 23 2002
Poster of Intimate Portrait: Pam Dawber
Intimate Portrait: Pam Dawber
Mark Harmon was 50 in Intimate Portrait: Pam Dawber as 'Self'.
Movie Released: Tue, Jan 01 2002
Poster of And Never Let Her Go
And Never Let Her Go
Mark Harmon was 49 in And Never Let Her Go as 'Thomas Capano'.
Movie Released: Sun, Apr 01 2001
Poster of Crossfire Trail
Crossfire Trail
Mark Harmon was 49 in Crossfire Trail as 'Bruce Barkow'.
Movie Released: Sun, Jan 21 2001
Poster of The Amati Girls
The Amati Girls
Mark Harmon was 49 in The Amati Girls as 'Lawrence'.
Movie Released: Tue, Jan 09 2001
Poster of For All Time
For All Time
Mark Harmon was 49 in For All Time as 'Charles Lattimer'.
Movie Released: Wed, Oct 18 2000
Poster of I'll Remember April
I'll Remember April
Mark Harmon was 47 in I'll Remember April as 'John Cooper'.
Movie Released: Mon, Apr 05 1999
Poster of Fear and Loathing in Las Vegas
Fear and Loathing in Las Vegas
Mark Harmon was 46 in Fear and Loathing in Las Vegas as 'Magazine Reporter'.
Movie Released: Tue, May 19 1998
Poster of Casualties
Casualties
Mark Harmon was 45 in Casualties as 'Tommy Nance'.
Movie Released: Tue, Apr 15 1997
Poster of The First to Go
The First to Go
Mark Harmon was 45 in The First to Go as 'Jeremy Hampton'.
Movie Released: Wed, Jan 01 1997
Poster of The Last Supper
The Last Supper
Mark Harmon was 44 in The Last Supper as 'Dominant Male'.
Movie Released: Fri, Sep 08 1995
Poster of Magic in the Water
Magic in the Water
Mark Harmon was 43 in Magic in the Water as 'Jack Black'.
Movie Released: Wed, Aug 30 1995
Poster of Original Sins
Original Sins
Mark Harmon was 43 in Original Sins as 'Johnathan Franye'.
Movie Released: Wed, Apr 12 1995
Poster of Natural Born Killers
Natural Born Killers
Mark Harmon was 42 in Natural Born Killers as 'Mickey Knox in TV'.
Movie Released: Fri, Aug 26 1994
Poster of Wyatt Earp
Wyatt Earp
Mark Harmon was 42 in Wyatt Earp as 'Sheriff Johnny Behan'.
Movie Released: Fri, Jun 24 1994
Poster of Cold Heaven
Cold Heaven
Mark Harmon was 40 in Cold Heaven as 'Alex Davenport'.
Movie Released: Fri, May 29 1992
Poster of Till There Was You
Till There Was You
Mark Harmon was 39 in Till There Was You as 'Frank Flynn'.
Movie Released: Thu, Jul 18 1991
Poster of Shadow of a Doubt
Shadow of a Doubt
Mark Harmon was 39 in Shadow of a Doubt as 'Charles Spencer'.
Movie Released: Sat, Apr 27 1991
Poster of Long Road Home
Long Road Home
Mark Harmon was 39 in Long Road Home as 'Ertie Robertson'.
Movie Released: Mon, Feb 25 1991
Poster of Fourth Story
Fourth Story
Mark Harmon was 39 in Fourth Story as 'David Shepard'.
Movie Released: Sat, Jan 19 1991
Poster of Dillinger
Dillinger
Mark Harmon was 39 in Dillinger as 'John Dillinger'.
Movie Released: Sun, Jan 06 1991
Poster of Worth Winning
Worth Winning
Mark Harmon was 38 in Worth Winning as 'Taylor Worth'.
Movie Released: Fri, Oct 27 1989
Poster of Sweet Bird of Youth
Sweet Bird of Youth
Mark Harmon was 38 in Sweet Bird of Youth as 'Chance Wayne'.
Movie Released: Sun, Oct 01 1989
Poster of Stealing Home
Stealing Home
Mark Harmon was 36 in Stealing Home as 'Billy Wyatt'.
Movie Released: Fri, Aug 26 1988
Poster of The Presidio
The Presidio
Mark Harmon was 36 in The Presidio as 'Jay Austin'.
Movie Released: Fri, Jun 10 1988
Poster of After the Promise
After the Promise
Mark Harmon was 36 in After the Promise as 'Elmer Jackson'.
Movie Released: Sun, Oct 11 1987
Poster of Dear America: Letters Home from Vietnam
Dear America: Letters Home from Vietnam
Mark Harmon was 36 in Dear America: Letters Home from Vietnam as '(voice)'.
Movie Released: Thu, Oct 01 1987
Poster of Summer School
Summer School
Mark Harmon was 35 in Summer School as 'Mr. Freddy Shoop'.
Movie Released: Wed, Jul 22 1987
Poster of Let's Get Harry
Let's Get Harry
Mark Harmon was 35 in Let's Get Harry as 'Harry'.
Movie Released: Fri, Oct 31 1986
Poster of The Deliberate Stranger
The Deliberate Stranger
Mark Harmon was 34 in The Deliberate Stranger as 'Ted Bundy'.
Movie Released: Sun, May 04 1986
Poster of Prince of Bel Air
Prince of Bel Air
Mark Harmon was 34 in Prince of Bel Air as 'Robin Prince'.
Movie Released: Mon, Jan 20 1986
Poster of Tuareg: Desert Warrior
Tuareg: Desert Warrior
Mark Harmon was 32 in Tuareg: Desert Warrior as 'Gacel Sayah'.
Movie Released: Mon, Mar 12 1984
Poster of Intimate Agony
Intimate Agony
Mark Harmon was 31 in Intimate Agony as 'Tommy'.
Movie Released: Mon, Mar 21 1983
Poster of Flamingo Road
Flamingo Road
Mark Harmon was 28 in Flamingo Road as 'Fielding Carlyle'.
Movie Released: Mon, May 12 1980
Poster of Beyond the Poseidon Adventure
Beyond the Poseidon Adventure
Mark Harmon was 27 in Beyond the Poseidon Adventure as 'Larry Simpson'.
Movie Released: Fri, May 18 1979
Poster of Comes a Horseman
Comes a Horseman
Mark Harmon was 27 in Comes a Horseman as 'Billy Joe Meynert'.
Movie Released: Wed, Oct 25 1978
Poster of Little Mo
Little Mo
Mark Harmon was 27 in Little Mo as 'Norman Brinker'.
Movie Released: Tue, Sep 05 1978
Poster of Getting Married
Getting Married
Mark Harmon was 26 in Getting Married as 'Howie Lesser'.
Movie Released: Wed, May 17 1978
Poster of Eleanor and Franklin: The White House Years
Eleanor and Franklin: The White House Years
Mark Harmon was 25 in Eleanor and Franklin: The White House Years as 'Robert Dunlap'.
Movie Released: Sun, Mar 13 1977
Poster of Sonic Boom
Sonic Boom
Mark Harmon was 22 in Sonic Boom as 'Student Controller'.
Movie Released: Tue, Jan 01 1974

TV Shows (Acting Roles)

Sorted by Release Date
Ages in TV shows are based off the first air date and may not be accurate. View individual episode details for accurate ages
Poster of NCIS: Origins
NCIS: Origins
Mark Harmon was 73+ in NCIS: Origins as 'Older Leroy Jethro Gibbs (uncredited), Older Leroy Jethro Gibbs (voice) (uncredited)'.
TV Show Released: First Air Date
Mon, Oct 14 2024
Poster of Joe Montana: Cool Under Pressure
Joe Montana: Cool Under Pressure
Mark Harmon was 70+ in Joe Montana: Cool Under Pressure as 'Self - Narrator (voice)'.
TV Show Released: First Air Date
Thu, Jan 06 2022
Poster of The Kelly Clarkson Show
The Kelly Clarkson Show
Mark Harmon was 68+ in The Kelly Clarkson Show as 'Self'.
TV Show Released: First Air Date
Mon, Sep 09 2019
Poster of All or Nothing: The Michigan Wolverines
All or Nothing: The Michigan Wolverines
Mark Harmon was 66+ in All or Nothing: The Michigan Wolverines as 'Narrator (voice)'.
TV Show Released: First Air Date
Fri, Apr 06 2018
Poster of The American West
The American West
Mark Harmon was 64+ in The American West as 'Self'.
TV Show Released: First Air Date
Sat, Jun 11 2016
Poster of The Late Late Show with James Corden
The Late Late Show with James Corden
Mark Harmon was 63+ in The Late Late Show with James Corden as 'Self'.
TV Show Released: First Air Date
Mon, Mar 23 2015
Poster of NCIS: New Orleans
NCIS: New Orleans
Mark Harmon was 63+ in NCIS: New Orleans as 'Leroy Jethro Gibbs'.
TV Show Released: First Air Date
Tue, Sep 23 2014
Poster of The Arsenio Hall Show
The Arsenio Hall Show
Mark Harmon was 62+ in The Arsenio Hall Show as 'Self'.
TV Show Released: First Air Date
Mon, Sep 09 2013
Poster of The Bonnie Hunt Show
The Bonnie Hunt Show
Mark Harmon was 57+ in The Bonnie Hunt Show as 'Self'.
TV Show Released: First Air Date
Mon, Sep 08 2008
Poster of The Megan Mullally Show
The Megan Mullally Show
Mark Harmon was 55+ in The Megan Mullally Show as 'Self - Guest'.
TV Show Released: First Air Date
Mon, Sep 18 2006
Poster of The Tony Danza Show
The Tony Danza Show
Mark Harmon was 53+ in The Tony Danza Show as 'Self'.
TV Show Released: First Air Date
Mon, Sep 13 2004
Poster of NCIS
NCIS
Mark Harmon was 52+ in NCIS as 'Leroy Jethro Gibbs'.
TV Show Released: First Air Date
Tue, Sep 23 2003
Poster of Jimmy Kimmel Live!
Jimmy Kimmel Live!
Mark Harmon was 51+ in Jimmy Kimmel Live!
TV Show Released: First Air Date
Sun, Jan 26 2003
Poster of The Legend of Tarzan
The Legend of Tarzan
Mark Harmon was 50+ in The Legend of Tarzan as 'Bob Markham (voice)'.
TV Show Released: First Air Date
Mon, Sep 03 2001
Poster of And Never Let Her Go
And Never Let Her Go
Mark Harmon was 49+ in And Never Let Her Go as 'Thomas Capano'.
TV Show Released: First Air Date
Sun, Apr 01 2001
Poster of The West Wing
The West Wing
Mark Harmon was 48+ in The West Wing as 'Simon Donovan'.
TV Show Released: First Air Date
Wed, Sep 22 1999
Poster of Family Guy
Family Guy
Mark Harmon was 47+ in Family Guy as 'Leroy Jethro Gibbs (voice)'.
TV Show Released: First Air Date
Sun, Jan 31 1999
Poster of From the Earth to the Moon
From the Earth to the Moon
Mark Harmon was 46+ in From the Earth to the Moon as 'Wally Schirra'.
TV Show Released: First Air Date
Sun, Apr 05 1998
Poster of The View
The View
Mark Harmon was 45+ in The View as 'Self'.
TV Show Released: First Air Date
Mon, Aug 11 1997
Poster of The Rosie O'Donnell Show
The Rosie O'Donnell Show
Mark Harmon was 44+ in The Rosie O'Donnell Show as 'Self'.
TV Show Released: First Air Date
Mon, Jun 10 1996
Poster of JAG
JAG
Mark Harmon was 44+ in JAG as 'Leroy Jethro Gibbs'.
TV Show Released: First Air Date
Sat, Sep 23 1995
Poster of Charlie Grace
Charlie Grace
Mark Harmon was 44+ in Charlie Grace as 'Charlie Grace'.
TV Show Released: First Air Date
Thu, Sep 14 1995
Poster of Chicago Hope
Chicago Hope
Mark Harmon was 43+ in Chicago Hope as 'Jack McNeil'.
TV Show Released: First Air Date
Sun, Sep 18 1994
Poster of Harts of the West
Harts of the West
Mark Harmon was 42+ in Harts of the West
TV Show Released: First Air Date
Sat, Sep 25 1993
Poster of The Tonight Show with Jay Leno
The Tonight Show with Jay Leno
Mark Harmon was 40+ in The Tonight Show with Jay Leno
TV Show Released: First Air Date
Mon, May 25 1992
Poster of Reasonable Doubts
Reasonable Doubts
Mark Harmon was 40+ in Reasonable Doubts as 'Det. Dicky Cobb'.
TV Show Released: First Air Date
Thu, Sep 26 1991
Poster of Moonlighting
Moonlighting
Mark Harmon was 33+ in Moonlighting as 'Sam Crawford'.
TV Show Released: First Air Date
Sun, Mar 03 1985
Poster of St. Elsewhere
St. Elsewhere
Mark Harmon was 31+ in St. Elsewhere as 'Robert Caldwell'.
TV Show Released: First Air Date
Tue, Oct 26 1982
Poster of Goliath Awaits
Goliath Awaits
Mark Harmon was 30+ in Goliath Awaits as 'Peter Cabot'.
TV Show Released: First Air Date
Wed, Nov 11 1981
Poster of Entertainment Tonight
Entertainment Tonight
Mark Harmon was 30+ in Entertainment Tonight as 'Self'.
TV Show Released: First Air Date
Tue, Sep 15 1981
Poster of Flamingo Road
Flamingo Road
Mark Harmon was 29+ in Flamingo Road
TV Show Released: First Air Date
Tue, Jan 06 1981
Poster of The Dream Merchants
The Dream Merchants
Mark Harmon was 28+ in The Dream Merchants as 'Johnny Edge'.
TV Show Released: First Air Date
Mon, May 12 1980
Poster of 240-Robert
240-Robert
Mark Harmon was 27+ in 240-Robert as 'Thib Thibideaux'.
TV Show Released: First Air Date
Tue, Aug 28 1979
Poster of Centennial
Centennial
Mark Harmon was 27+ in Centennial as 'Captain John McIntosh'.
TV Show Released: First Air Date
Sun, Oct 01 1978
Poster of Sam
Sam
Mark Harmon was 26+ in Sam as 'Mike Breen'.
TV Show Released: First Air Date
Tue, Mar 14 1978
Poster of The Love Boat
The Love Boat
Mark Harmon was 26+ in The Love Boat as 'Doug Bradbury'.
TV Show Released: First Air Date
Sat, Sep 24 1977
Poster of The Hardy Boys / Nancy Drew Mysteries
The Hardy Boys / Nancy Drew Mysteries
Mark Harmon was 25+ in The Hardy Boys / Nancy Drew Mysteries
TV Show Released: First Air Date
Sun, Jan 30 1977
Poster of All's Fair
All's Fair
Mark Harmon was 25+ in All's Fair
TV Show Released: First Air Date
Mon, Sep 20 1976
Poster of Delvecchio
Delvecchio
Mark Harmon was 25+ in Delvecchio as 'Ronnie Striker'.
TV Show Released: First Air Date
Thu, Sep 09 1976
Poster of Laverne & Shirley
Laverne & Shirley
Mark Harmon was 24+ in Laverne & Shirley
TV Show Released: First Air Date
Tue, Jan 27 1976
Poster of Saturday Night Live
Saturday Night Live
Mark Harmon was 24+ in Saturday Night Live as 'Self - Host'.
TV Show Released: First Air Date
Sat, Oct 11 1975
Poster of Police Woman
Police Woman
Mark Harmon was 23+ in Police Woman as ', Stanski'.
TV Show Released: First Air Date
Fri, Sep 13 1974
Poster of Ozzie's Girls
Ozzie's Girls
Mark Harmon was 22+ in Ozzie's Girls
TV Show Released: First Air Date
Sat, Sep 15 1973
Poster of Emergency!
Emergency!
Mark Harmon was 20+ in Emergency! as 'Ofcr. Dave Gordon'.
TV Show Released: First Air Date
Sat, Jan 22 1972
Poster of Adam-12
Adam-12
Mark Harmon was 17+ in Adam-12 as 'Officer Gus Corbin'.
TV Show Released: First Air Date
Sat, Sep 21 1968
Poster of The Tonight Show Starring Johnny Carson
The Tonight Show Starring Johnny Carson
Mark Harmon was 11+ in The Tonight Show Starring Johnny Carson as 'Self'.
TV Show Released: First Air Date
Mon, Oct 01 1962
Poster of Hallmark Hall of Fame
Hallmark Hall of Fame
Mark Harmon was 0+ in Hallmark Hall of Fame as 'Charles'.
TV Show Released: First Air Date
Mon, Dec 24 1951
Poster of Golden Globe Awards
Golden Globe Awards
Mark Harmon was 0+ in Golden Globe Awards as 'Self - Nominee, Self'.
TV Show Released: First Air Date
Thu, Jan 20 1944