John Mahon
Acting
57
Acting Credits
Biography
John Patrick Mahon (February 2, 1938 - May 3, 2020) was an American film, stage and television actor. He was known for Armageddon (1998), L.A. Confidential (1997) and Zodiac (2007).
Known For
Filmography
Star Trek: Enterprise - In a Mirror, Darkly
2014
as Adm. Gardner (Mirror)
A Call to Arms
2009
as Major General Cosgrove USMC
Zodiac
2007
as Riverside Captain
Zoey 101
2005
as Mr. Bradford
Just Ask My Children
2001
as Judge Ferguson
Crossing Jordan
2001
as Police Captain
Star Trek: Enterprise
2001
as Admiral Gardner
The Division
2001
as Barry Constansas
Austin Powers: The Spy Who Shagged Me
1999
as NATO Colonel
Angel
1999
as Trevor Lockley
Armageddon
1998
as Karl
L.A. Confidential
1997
as Police Chief
Just Shoot Me!
1997
as Col. Alan Drake
Profiler
1996
as Det. Spitz
The Pretender
1996
as Eugene Clark
Arli$$
1996
as Bert Shaw
The American President
1995
as Chairman of the Joint Chiefs
JAG
1995
as Admiral Rockerly
Roswell
1994
as Red Hat Vet
Touched by an Angel
1994
as Wally
Diagnosis: Murder
1993
as Fire Chief
The X-Files
1993
as General Wegman
Frasier
1993
as Walt Crane
One False Move
1992
as Chief Jenkins
Final Shot: The Hank Gathers Story
1992
as LMU Coach
The People Under the Stairs
1991
as Police Sergeant
Flesh 'n' Blood
1991
as Holly's Dad
Baywatch
1989
as Arnold Anderson
The Couch Trip
1988
as Police Captain
Six Against the Rock
1987
as Officer Bill Miller
Jake and the Fatman
1987
as Jameson
Betrayed by Innocence
1986
as Bailiff
MacGyver
1985
as Vendor
Misfits of Science
1985
as Technician
Victims for Victims: The Theresa Saldana Story
1984
Crazy like a Fox
1984
as Lt. Doyle
Hunter
1984
as IAD Officer #2
Crazy like a Fox
1984
as Zach
Manimal
1983
as Man
Scarecrow and Mrs. King
1983
St. Elsewhere
1982
as Police Officer
Knight Rider
1982
as Alfie Girdler
T. J. Hooker
1982
as Mr. Zewecki
Hill Street Blues
1981
as Mario
Hill Street Blues
1981
as Detective McConnell
Knots Landing
1979
as Surveillant
Knots Landing
1979
as Superior
Knots Landing
1979
as Investigator
Someone's Watching Me!
1978
as Frimsin
A Killing Affair
1977
as Det. Shoup
Collision Course: Truman vs. MacArthur
1976
as Gen. Hoyt Vandenberg
The Rockford Files
1974
as Todd Morris
Police Woman
1974
as Fireman
The Rockford Files
1974
as Victor Sherman
The Exorcist
1973
as Language Lab Director
Kojak
1973
as Lawton
Kojak
1973
as I. A. D. Man