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Known for Acting
Born 1938-02-02 · Died 2020-05-03 in Scranton, Pennsylvania, USA
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).
Star Trek: Enterprise - In a Mirror, Darkly (2014) — Adm. Gardner (Mirror)
A Call to Arms (2009) — Major General Cosgrove USMC
Zodiac (2007) — Riverside Captain
Zoey 101 (2005) — Mr. Bradford · 1 episode
Just Ask My Children (2001) — Judge Ferguson
Crossing Jordan (2001) — Police Captain · 1 episode
Star Trek: Enterprise (2001) — Admiral Gardner · 1 episode
The Division (2001) — Barry Constansas · 1 episode
Austin Powers: The Spy Who Shagged Me (1999) — NATO Colonel
Angel (1999) — Trevor Lockley · 2 episodes
Armageddon (1998) — Karl
L.A. Confidential (1997) — Police Chief
Just Shoot Me! (1997) — Col. Alan Drake · 1 episode
The Pretender (1996) — Eugene Clark · 1 episode
Profiler (1996) — Det. Spitz · 1 episode
Arli$$ (1996) — Bert Shaw · 1 episode
The American President (1995) — Chairman of the Joint Chiefs
JAG (1995) — Admiral Rockerly · 1 episode
Roswell (1994) — Red Hat Vet
Touched by an Angel (1994) — Wally · 1 episode
Diagnosis: Murder (1993) — Fire Chief · 1 episode
The X-Files (1993) — General Wegman · 2 episodes
Frasier (1993) — Walt Crane · 1 episode
One False Move (1992) — Chief Jenkins
Final Shot: The Hank Gathers Story (1992) — LMU Coach
The People Under the Stairs (1991) — Police Sergeant
Flesh 'n' Blood (1991) — Holly's Dad · 1 episode
Baywatch (1989) — Arnold Anderson · 1 episode
The Couch Trip (1988) — Police Captain
Six Against the Rock (1987) — Officer Bill Miller
Jake and the Fatman (1987) — Jameson · 1 episode
Betrayed by Innocence (1986) — Bailiff
MacGyver (1985) — Vendor · 1 episode
Misfits of Science (1985) — Technician · 1 episode
Victims for Victims: The Theresa Saldana Story (1984)
Crazy like a Fox (1984) — Lt. Doyle · 1 episode
Hunter (1984) — IAD Officer #2 · 1 episode
Crazy like a Fox (1984) — Zach · 1 episode
Scarecrow and Mrs. King (1983) · 1 episode
Manimal (1983) — Man · 1 episode
St. Elsewhere (1982) — Police Officer · 1 episode
Knight Rider (1982) — Alfie Girdler · 1 episode
T. J. Hooker (1982) — Mr. Zewecki · 1 episode
Hill Street Blues (1981) — Detective McConnell · 1 episode
Hill Street Blues (1981) — Mario · 1 episode
Knots Landing (1979) — Surveillant · 1 episode
Knots Landing (1979) — Superior · 1 episode
Knots Landing (1979) — Investigator · 1 episode
Someone's Watching Me! (1978) — Frimsin
A Killing Affair (1977) — Det. Shoup
Collision Course: Truman vs. MacArthur (1976) — Gen. Hoyt Vandenberg
The Rockford Files (1974) — Todd Morris · 1 episode
Police Woman (1974) — Fireman · 1 episode
The Rockford Files (1974) — Victor Sherman · 1 episode
The Exorcist (1973) — Language Lab Director
Kojak (1973) — Lawton · 1 episode
Kojak (1973) — I. A. D. Man · 1 episode