
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.
26 TV shows
TV Shows

NCIS
CBS

Family Guy
FOX

The Late Show with Stephen Colbert
CBS

The Tonight Show Starring Johnny Carson
NBC

JAG
NBC

Saturday Night Live
NBC

The Kelly Clarkson Show
Syndication

The West Wing
NBC

The Love Boat
ABC

The Late Late Show with James Corden
CBS

NCIS: New Orleans
CBS

Emergency!
NBC

The View
ABC

Chicago Hope
CBS

Jimmy Kimmel Live!
ABC

St. Elsewhere
NBC

Moonlighting
ABC

Police Woman
NBC

NCIS: Origins
CBS

Laverne & Shirley
ABC

The Tonight Show with Jay Leno
NBC

The Legend of Tarzan
UPN
The Tony Danza Show
Syndication

The Megan Mullally Show
TBS

The Bonnie Hunt Show
Syndication

Centennial
NBC
Other Credits
The Rosie O'Donnell Show, Flamingo Road, 240-Robert, The Hardy Boys / Nancy Drew Mysteries, From the Earth to the Moon, All's Fair, Hallmark Hall of Fame, Reasonable Doubts, Sam, Harts of the West, Charlie Grace, The Dream Merchants, Ozzie's Girls, Adam-12, Goliath Awaits, The American West, All or Nothing: The Michigan Wolverines, The Arsenio Hall Show, Entertainment Tonight, Delvecchio, And Never Let Her Go, Joe Montana: Cool Under Pressure, Golden Globe Awards, The Deliberate Stranger, Strangers