Personal Info
Thomas Mark Harmon
Mark Harmon
Acting
Biography
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 rec…
Known For
Filmography
Movies
Freakier Friday
as Ryan
NCISverse: The First 1,000
as Self
The Wild
as Self
Certain Prey
as Lucas Davenport
Justice League: Crisis on Two Earths
as Superman (voice)
Weather Girl
as Dale
Chasing Liberty
as James Foster
Freaky Friday
as Ryan
Local Boys
as Jim Wesley
Intimate Portrait: Pam Dawber
as Self
TV Shows
NCIS: Origins
as Older Leroy Jethro Gibbs (uncredited) · 1 ep.
Joe Montana: Cool Under Pressure
as Self - Narrator (voice) · 6 ep.
The Kelly Clarkson Show
as Self · 1 ep.
All or Nothing: The Michigan Wolverines
as Narrator (voice) · 8 ep.
The American West
as Self · 8 ep.
The Late Show with Stephen Colbert
as Self - Guest · 1 ep.
The Late Late Show with James Corden
as Self · 1 ep.
NCIS: New Orleans
as Leroy Jethro Gibbs · 4 ep.
The Arsenio Hall Show
as Self · 1 ep.
The Bonnie Hunt Show
as Self · 1 ep.