Acting
Mark Harmon
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 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
Freakier Friday
Film · 2025
NCISverse: The First 1,000
Film · 2024
NCIS: Origins
Series · 2024
NCIS: Origins
Series · 2024
NCIS: Origins
Series · 2024
Joe Montana: Cool Under Pressure
Series · 2022
The Wild
Film · 2019
The Kelly Clarkson Show
Series · 2019
All or Nothing: The Michigan Wolverines
Series · 2018
The American West
Series · 2016
The Late Late Show with James Corden
Series · 2015
The Late Show with Stephen Colbert
Series · 2015
NCIS: New Orleans
Series · 2014
The Arsenio Hall Show
Series · 2013
Steve Harvey
Series · 2012
Certain Prey
Film · 2011
Justice League: Crisis on Two Earths
Film · 2010
Weather Girl
Film · 2009
The Bonnie Hunt Show
Series · 2008
The Megan Mullally Show
Series · 2006
Chasing Liberty
Film · 2004
The Tony Danza Show
Series · 2004
Freaky Friday
Film · 2003
Jimmy Kimmel Live!
Series · 2003
NCIS
Series · 2003
Local Boys
Film · 2002
Intimate Portrait: Pam Dawber
Film · 2002
Crossfire Trail
Film · 2001
And Never Let Her Go
Film · 2001
The Amati Girls
Film · 2001
The Legend of Tarzan
Series · 2001
And Never Let Her Go
Series · 2001
For All Time
Film · 2000
I'll Remember April
Film · 1999
The West Wing
Series · 1999
Family Guy
Series · 1999
Fear and Loathing in Las Vegas
Film · 1998
From the Earth to the Moon
Series · 1998
Casualties
Film · 1997
The First to Go
Film · 1997
The View
Series · 1997
The Rosie O'Donnell Show
Series · 1996
Strangers
Series · 1996
Original Sins
Film · 1995
Magic in the Water
Film · 1995
The Last Supper
Film · 1995
JAG
Series · 1995
Charlie Grace
Series · 1995
Wyatt Earp
Film · 1994
Natural Born Killers
Film · 1994
Chicago Hope
Series · 1994
Harts of the West
Series · 1993
Cold Heaven
Film · 1992
The Tonight Show with Jay Leno
Series · 1992
Shadow of a Doubt
Film · 1991
Dillinger
Film · 1991
Long Road Home
Film · 1991
Till There Was You
Film · 1991
Fourth Story
Film · 1991
Reasonable Doubts
Series · 1991
Worth Winning
Film · 1989
Sweet Bird of Youth
Film · 1989
The Presidio
Film · 1988
Stealing Home
Film · 1988
Summer School
Film · 1987
Dear America: Letters Home from Vietnam
Film · 1987
After the Promise
Film · 1987
The Deliberate Stranger
Film · 1986
Prince of Bel Air
Film · 1986
Let's Get Harry
Film · 1986
The Deliberate Stranger
Series · 1986
Moonlighting
Series · 1985
Tuareg: Desert Warrior
Film · 1984
Intimate Agony
Film · 1983
St. Elsewhere
Series · 1982
Flamingo Road
Series · 1981
Goliath Awaits
Series · 1981
Entertainment Tonight
Series · 1981
Flamingo Road
Film · 1980
The Dream Merchants
Series · 1980
Beyond the Poseidon Adventure
Film · 1979
240-Robert
Series · 1979
Getting Married
Film · 1978
Comes a Horseman
Film · 1978
Little Mo
Film · 1978
Centennial
Series · 1978
Sam
Series · 1978
Eleanor and Franklin: The White House Years
Film · 1977
The Love Boat
Series · 1977
The Hardy Boys / Nancy Drew Mysteries
Series · 1977
Laverne & Shirley
Series · 1976
All's Fair
Series · 1976
Delvecchio
Series · 1976
Saturday Night Live
Series · 1975
Sonic Boom
Film · 1974
Police Woman
Series · 1974
Police Woman
Series · 1974
Ozzie's Girls
Series · 1973
Emergency!
Series · 1972
Adam-12
Series · 1968
The Tonight Show Starring Johnny Carson
Series · 1962
Hallmark Hall of Fame
Series · 1951
Golden Globe Awards
Series · 1944
Golden Globe Awards
Series · 1944