Movies (Acting Roles)
A Call to Arms
John Mahon was 71 in A Call to Arms as 'Major General Cosgrove USMC'.Movie Released: Fri, Mar 13 2009
Zodiac
John Mahon was 69 in Zodiac as 'Riverside Captain'.Movie Released: Fri, Mar 02 2007
Just Ask My Children
John Mahon was 63 in Just Ask My Children as 'Judge Ferguson'.Movie Released: Mon, Sep 10 2001
Armageddon
John Mahon was 60 in Armageddon as 'Karl'.Movie Released: Wed, Jul 01 1998
L.A. Confidential
John Mahon was 59 in L.A. Confidential as 'Police Chief'.Movie Released: Fri, Sep 19 1997
The American President
John Mahon was 57 in The American President as 'Chairman of the Joint Chiefs'.Movie Released: Fri, Nov 17 1995
One False Move
John Mahon was 53 in One False Move as 'Chief Jenkins'.Movie Released: Sat, Oct 12 1991
The Couch Trip
John Mahon was 49 in The Couch Trip as 'Police Captain'.Movie Released: Fri, Jan 15 1988
Six Against the Rock
John Mahon was 49 in Six Against the Rock as 'Officer Bill Miller'.Movie Released: Mon, May 18 1987
Betrayed by Innocence
John Mahon was 48 in Betrayed by Innocence as 'Bailiff'.Movie Released: Sat, Mar 01 1986
Someone's Watching Me!
John Mahon was 40 in Someone's Watching Me! as 'Frimsin'.Movie Released: Wed, Nov 29 1978
A Killing Affair
John Mahon was 39 in A Killing Affair as 'Det. Shoup'.Movie Released: Wed, Sep 21 1977
The Exorcist
John Mahon was 35 in The Exorcist as 'Language Lab Director'.Movie Released: Wed, Dec 26 1973
TV Shows (Acting Roles)
Ages in TV shows are based off the first air date and may not be accurate. View individual episode details for accurate ages
Zoey 101
John Mahon was 66+ in Zoey 101 as 'Mr. Bradford'.TV Show Released: First Air Date
Sun, Jan 09 2005
Star Trek: Enterprise
John Mahon was 63+ in Star Trek: Enterprise as 'Admiral Gardner'.TV Show Released: First Air Date
Wed, Sep 26 2001
Crossing Jordan
John Mahon was 63+ in Crossing Jordan as 'Police Captain'.TV Show Released: First Air Date
Mon, Sep 24 2001
Angel
John Mahon was 61+ in Angel as 'Trevor Lockley'.TV Show Released: First Air Date
Tue, Oct 05 1999
Just Shoot Me!
John Mahon was 59+ in Just Shoot Me! as 'Col. Alan Drake'.TV Show Released: First Air Date
Tue, Mar 04 1997
Profiler
John Mahon was 58+ in Profiler as 'Det. Spitz'.TV Show Released: First Air Date
Sat, Sep 21 1996
The Pretender
John Mahon was 58+ in The Pretender as 'Eugene Clark'.TV Show Released: First Air Date
Thu, Sep 19 1996
JAG
John Mahon was 57+ in JAG as 'Admiral Rockerly'.TV Show Released: First Air Date
Sat, Sep 23 1995
Touched by an Angel
John Mahon was 56+ in Touched by an Angel as 'Wally'.TV Show Released: First Air Date
Wed, Sep 21 1994
Diagnosis: Murder
John Mahon was 55+ in Diagnosis: Murder as 'Fire Chief'.TV Show Released: First Air Date
Fri, Oct 29 1993
Frasier
John Mahon was 55+ in Frasier as 'Walt Crane'.TV Show Released: First Air Date
Thu, Sep 16 1993
The X-Files
John Mahon was 55+ in The X-Files as 'General Wegman'.TV Show Released: First Air Date
Fri, Sep 10 1993
Flesh 'n' Blood
John Mahon was 53+ in Flesh 'n' Blood as 'Holly's Dad'.TV Show Released: First Air Date
Thu, Sep 19 1991
Baywatch
John Mahon was 51+ in Baywatch as 'Arnold Anderson'.TV Show Released: First Air Date
Sun, Apr 23 1989
Jake and the Fatman
John Mahon was 49+ in Jake and the Fatman as 'Jameson'.TV Show Released: First Air Date
Sat, Sep 26 1987
Misfits of Science
John Mahon was 47+ in Misfits of Science as 'Technician'.TV Show Released: First Air Date
Fri, Oct 04 1985
MacGyver
John Mahon was 47+ in MacGyver as 'Vendor'.TV Show Released: First Air Date
Sun, Sep 29 1985
Crazy like a Fox
John Mahon was 46+ in Crazy like a Fox as 'Lt. Doyle, Zach'.TV Show Released: First Air Date
Sun, Dec 30 1984
Hunter
John Mahon was 46+ in Hunter as 'I.A.D. Officer #2'.TV Show Released: First Air Date
Tue, Sep 18 1984
Scarecrow and Mrs. King
John Mahon was 45+ in Scarecrow and Mrs. King TV Show Released: First Air Date
Mon, Oct 03 1983
Manimal
John Mahon was 45+ in Manimal as 'Man'.TV Show Released: First Air Date
Fri, Sep 30 1983
St. Elsewhere
John Mahon was 44+ in St. Elsewhere as 'Police Officer'.TV Show Released: First Air Date
Tue, Oct 26 1982
Knight Rider
John Mahon was 44+ in Knight Rider as 'Alfie Girdler'.TV Show Released: First Air Date
Sun, Sep 26 1982
Hill Street Blues
John Mahon was 42+ in Hill Street Blues as 'Detective McConnell, Mario'.TV Show Released: First Air Date
Thu, Jan 15 1981
Knots Landing
John Mahon was 41+ in Knots Landing as 'Surveillant, Superior, Investigator'.TV Show Released: First Air Date
Thu, Dec 27 1979
The Rockford Files
John Mahon was 36+ in The Rockford Files as 'Todd Morris, Victor Sherman'.TV Show Released: First Air Date
Fri, Sep 13 1974
Police Woman
John Mahon was 36+ in Police Woman as 'Fireman'.TV Show Released: First Air Date
Fri, Sep 13 1974
Kojak
John Mahon was 35+ in Kojak as 'Lawton, I. A. D. Man'.TV Show Released: First Air Date
Wed, Oct 24 1973
