
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).

Armageddon
1998 · as Karl

Zodiac
2007 · as Riverside Captain

The Exorcist
1973 · as Language Lab Director

L.A. Confidential
1997 · as Police Chief

Austin Powers: The Spy Who Shagged Me
1999 · as NATO Colonel

The American President
1995 · as Chairman of the Joint Chiefs

The People Under the Stairs
1991 · as Police Sergeant

Roswell
1994 · as Red Hat Vet

Just Ask My Children
2001 · as Judge Ferguson

The Couch Trip
1988 · as Police Captain

One False Move
1992 · as Chief Jenkins

Someone's Watching Me!
1978 · as Frimsin

A Killing Affair
1977 · as Det. Shoup

A Call to Arms
2009 · as Major General Cosgrove USMC

Six Against the Rock
1987 · as Officer Bill Miller

Collision Course: Truman vs. MacArthur
1976 · as Gen. Hoyt Vandenberg

Victims for Victims: The Theresa Saldana Story
1984

Betrayed by Innocence
1986 · as Bailiff