Mark Harmon

Thomas Mark Harmon was born in Burbank, California, to football player and broadcaster Tom Harmon and actress Elyse Knox (née Kornbrath). Harmon played college football and found success as one of TV's hunkiest actors. While many of his roles have relied on good looks, Harmon was impressive as the suave doctor on St. Elsewhere (1982) who contracted AIDS.

His sisters are Kelly Harmon, the Tic-Tac model, and Kristin Harmon, a painter and ex-wife of musician Ricky Nelson. He is the uncle of musicians Matthew Nelson and Gunnar Nelson of the band Nelson, and actress Tracy Nelson. In 1987, Harmon and his wife, actress Pam Dawber, sued his sister Kristin Harmon, for custody of her youngest son, Sam.

Known For


Cast Credits

All or Nothing: The Michigan Wolverines (2018)
Starring as Narrator (8 episodes)
The Late Late Show with James Corden (2015)
Guest starring as Mark Harmon
NCIS: New Orleans (2014)
Guest starring as Special Agent Leroy Jethro Gibbs (4 episodes)
The Talk (2011)
Guest starring as Mark Harmon
NCIS (2003)
Starring as Special Agent Leroy Jethro Gibbs (378 episodes)
The Legend of Tarzan (2001)
Guest starring as Bob Markham
The West Wing (1999)
Guest starring as Agent Simon Donovan (4 episodes)
From the Earth to the Moon (1998)
Guest starring as Walter Schirra
The Daily Show with Craig Kilborn (1996)
Guest starring as Mark Harmon
JAG (1995)
Guest starring as Leroy Jethro Gibbs (2 episodes)
Chicago Hope (1994)
Starring as Dr. Jack McNeil (95 episodes)
Harts of the West (1993)
Guest starring as Rodeo clown
Reasonable Doubts (1991)
Starring as Det. Dicky Cobb (44 episodes)
Moonlighting (1985)
Guest starring as Sam Crawford (4 episodes)
St. Elsewhere (1982)
Starring as Dr. Robert Caldwell (63 episodes)
Flamingo Road (1981)
Starring as Fielding Carlyle (37 episodes)
240-Robert (1979)
Starring as Deputy Dwayne 'Thib' Thibideaux (13 episodes)
Centennial (1978)
Guest starring as Captain John McIntosh (3 episodes)
The Hardy Boys/Nancy Drew Mysteries (1977)
Guest starring as Chip Garvey
Battle of the Network Stars (1976)
Guest starring as Mark Harmon
Laverne & Shirley (1976)
Guest starring as Victor
Police Woman (1974)
Guest starring as Paul Donin
Guest starring as Stanski
Police Story (1973)
Guest starring as Officer Hazelton
Emergency! (1972)
Guest starring as Ofcr. Dave Gordon
Adam-12 (1968)
Guest starring as Officer Gus Corbin

Crew Credits

NCIS: New Orleans (2014)
Show crew as Executive Producer (96 episodes)
NCIS (2003)
Show crew as Executive Producer (96 episodes)