Movies (Acting Roles)
A Call to Arms
John Mahon was
71 in A Call to Arms
as 'Major General Cosgrove USMC'.
Fri, Mar 13 2009
Zodiac
John Mahon was
69 in Zodiac
as 'Riverside Captain'.
Fri, Mar 02 2007
Armageddon
John Mahon was
60 in Armageddon
as 'Karl'.
Wed, Jul 01 1998
L.A. Confidential
John Mahon was
59 in L.A. Confidential
as 'Police Chief'.
Fri, Sep 19 1997
The American President
John Mahon was
57 in The American President
as 'Chairman of the Joint Chiefs'.
Fri, Nov 17 1995
One False Move
John Mahon was
53 in One False Move
as 'Chief Jenkins'.
Sat, Oct 12 1991
The Couch Trip
John Mahon was
49 in The Couch Trip
as 'Police Captain'.
Fri, Jan 15 1988
Six Against the Rock
John Mahon was
49 in Six Against the Rock
as 'Officer Bill Miller'.
Mon, May 18 1987
A Killing Affair
John Mahon was
39 in A Killing Affair
as 'Det. Shoup'.
Wed, Sep 21 1977
The Exorcist
John Mahon was
35 in The Exorcist
as 'Language Lab Director'.
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'.
First Air Date
Sun, Jan 09 2005
Star Trek: Enterprise
John Mahon was
63+ in Star Trek: Enterprise
as 'Admiral Gardner'.
First Air Date
Wed, Sep 26 2001
Crossing Jordan
John Mahon was
63+ in Crossing Jordan
as 'Police Captain'.
First Air Date
Mon, Sep 24 2001
Angel
John Mahon was
61+ in Angel
as 'Trevor Lockley'.
First Air Date
Tue, Oct 05 1999
Just Shoot Me!
John Mahon was
59+ in Just Shoot Me!
as 'Col. Alan Drake'.
First Air Date
Tue, Mar 04 1997
Profiler
John Mahon was
58+ in Profiler
as 'Det. Spitz'.
First Air Date
Sat, Sep 21 1996
The Pretender
John Mahon was
58+ in The Pretender
as 'Eugene Clark'.
First Air Date
Thu, Sep 19 1996
JAG
John Mahon was
57+ in JAG
as 'Admiral Rockerly'.
First Air Date
Sat, Sep 23 1995
Touched by an Angel
John Mahon was
56+ in Touched by an Angel
as 'Wally'.
First Air Date
Wed, Sep 21 1994
Diagnosis: Murder
John Mahon was
55+ in Diagnosis: Murder
as 'Fire Chief'.
First Air Date
Fri, Oct 29 1993
Frasier
John Mahon was
55+ in Frasier
as 'Walt Crane'.
First Air Date
Thu, Sep 16 1993
The X-Files
John Mahon was
55+ in The X-Files
as 'General Wegman'.
First Air Date
Fri, Sep 10 1993
Flesh 'n' Blood
John Mahon was
53+ in Flesh 'n' Blood
as 'Holly's Dad'.
First Air Date
Thu, Sep 19 1991
Baywatch
John Mahon was
51+ in Baywatch
as 'Arnold Anderson'.
First Air Date
Sun, Apr 23 1989
Jake and the Fatman
John Mahon was
49+ in Jake and the Fatman
as 'Jameson'.
First Air Date
Sat, Sep 26 1987
Misfits of Science
John Mahon was
47+ in Misfits of Science
as 'Technician'.
First Air Date
Fri, Oct 04 1985
MacGyver
John Mahon was
47+ in MacGyver
as 'Vendor'.
First Air Date
Sun, Sep 29 1985
Crazy like a Fox
John Mahon was
46+ in Crazy like a Fox
as 'Lt. Doyle, Zach'.
First Air Date
Sun, Dec 30 1984
Hunter
John Mahon was
46+ in Hunter
as 'I.A.D. Officer #2'.
First Air Date
Tue, Sep 18 1984
Manimal
John Mahon was
45+ in Manimal
as 'Man'.
First Air Date
Fri, Sep 30 1983
St. Elsewhere
John Mahon was
44+ in St. Elsewhere
as 'Police Officer'.
First Air Date
Tue, Oct 26 1982
Knight Rider
John Mahon was
44+ in Knight Rider
as 'Alfie Girdler'.
First Air Date
Sun, Sep 26 1982
Hill Street Blues
John Mahon was
42+ in Hill Street Blues
as 'Mario, Detective McConnell'.
First Air Date
Thu, Jan 15 1981
Knots Landing
John Mahon was
41+ in Knots Landing
as 'Surveillant, Superior, Investigator'.
First Air Date
Thu, Dec 27 1979
The Rockford Files
John Mahon was
36+ in The Rockford Files
as 'Todd Morris, Victor Sherman'.
First Air Date
Fri, Sep 13 1974
Police Woman
John Mahon was
36+ in Police Woman
as 'Fireman'.
First Air Date
Fri, Sep 13 1974
Kojak
John Mahon was
35+ in Kojak
as 'Lawton, I. A. D. Man'.
First Air Date
Wed, Oct 24 1973
