John Mahon (I) (1938–2020)


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John Mahon was born on February 2, 1938 in Scranton, Pennsylvania, USA as John Patrick Mahon. He was an actor, known for Armageddon (1998), L.A. Confidential (1997) and Zodiac (2007). He was married to Margaret Jean Street and Deidre. He died on May 3, 2020 in Los Angeles, California, USA. See full bio »

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Armageddon
Sat, Oct 24 10:30 PM PDT on SHOW (094)
Touched by an Angel
A Clown's Prayer (S6, Ep24)
Sun, Oct 25 9:00 AM PDT on KCBSDT2 (201)

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Known For

Armageddon Karl
(1998)
L.A. Confidential Police Chief
(1997)
Zodiac Riverside Captain
(2007)
The People Under the Stairs Police Sergeant
(1991)

Filmography

Jump to: Actor | Self
Hide Hide Show Show Actor (81 credits)
 2018 Do Not Go Gentle (TV Series)
Clarence (2018)
 2011 I.M. Meen: Outtakes (TV Mini-Series)
Gnorris (voice)
 2006-2007 Studio 60 on the Sunset Strip (TV Series)
George
- K&R: Part 2 (2007) ... George
- K&R: Part 1 (2007) ... George
- The Disaster Show (2007) ... George
- The Harriet Dinner: Part I (2007) ... George
- The Christmas Show (2006) ... George
 2007 Zodiac
Riverside Captain
 2005 Star Trek: Enterprise (TV Series)
Adm. Gardner (Mirror)
- In a Mirror, Darkly, Part II (2005) ... Adm. Gardner (Mirror)
 2005 Zoey 101 (TV Series)
Mr. Bradford
- Prank Week (2005) ... Mr. Bradford
 2004 Cold Case (TV Series)
Colonel
- The Plan (2004) ... Colonel
 2002 Crossing Jordan (TV Series)
- Payback (2002)
 2002 Strange World (TV Series)
Agent Milton
- The Devil Still Holds My Hand (2002) ... Agent Milton
 2001 Just Ask My Children (TV Movie)
Judge Ferguson
 2001 The Division (TV Series)
Barry Constansas
- What Sharp Teeth You Have (2001) ... Barry Constansas
 2001 That's Life (TV Series)
Leo
- Touched by a Biker (2001) ... Leo
 2000 JAG (TV Series)
Admiral Rockerly
- A Separate Peace: Part 2 (2000) ... Admiral Rockerly
 2000 Bull (TV Series)
Paul Catteo
- What the Past Will Bring ... Paul Catteo
 2000 Touched by an Angel (TV Series)
Wally
- A Clown's Prayer (2000) ... Wally
 1999-2000 Angel (TV Series)
Trevor Lockley
- The Prodigal (2000) ... Trevor Lockley
- Sense and Sensitivity (1999) ... Trevor Lockley
 1999 Just Shoot Me! (TV Series)
Alan Drake
- Blackmail Photographer (1999) ... Alan Drake
 1999 Arli$$ (TV Series)
 1998 The X-Files (TV Series)
General Wegman
- Dreamland II (1998) ... General Wegman
- Dreamland (1998) ... General Wegman
 1998 Diagnosis Murder (TV Series)
Fire Chief
- Resurrection: Part 1 (1998) ... Fire Chief
 1998 Armageddon
Karl
 1998 Frasier (TV Series)
Uncle Walt Crane
- Beware of Greeks (1998) ... Uncle Walt Crane
 1998 The Pretender (TV Series)
Eugene Clark
- A Stand-Up Guy (1998) ... Eugene Clark
 1998 Brooklyn South (TV Series)
Gene Donovan
- Dead Man Sleeping (1998) ... Gene Donovan
 1997 L.A. Confidential
Police Chief
 1997 Profiler (TV Series)
Det. Spitz
- Blue Highway (1997) ... Det. Spitz
 1995 I.M. Meen (Video Game)
Gnorris (voice)
 1995 The American President
Chairman of the Joint Chiefs
 1994 Roswell (TV Movie)
Red Hat Vet
 1994 Natural Selection (TV Movie)
Coach Dickler
 1993 Lifepod (TV Movie)
Earth Corp Ship Commander
 1993 Cutters (TV Series)
Dave
- Give 'Til It Hurts (1993) ... Dave
 1993 Space Rangers (TV Series)
Amb. Hardcastle
- Death Before Dishonor (1993) ... Amb. Hardcastle
 1992 Sinatra (TV Mini-Series)
Mr. Cleaves
- Part II (1992) ... Mr. Cleaves
- Part I (1992) ... Mr. Cleaves
 1992 Homefront (TV Series)
Bus Driver
- When the Stars Begin to Fall (1992) ... Bus Driver
 1992 Final Shot: The Hank Gathers Story (TV Movie)
LMU Coach
 1992 One False Move
Chief Jenkins
 1992 Murder Without Motive: The Edmund Perry Story (TV Movie)
Inspector Hedges
 1991 Flesh 'n' Blood (TV Series)
Holly's Dad
- Love Is a Many Splendored Thing (1991) ... Holly's Dad
 1991 The People Under the Stairs
Police Sergeant
 1990 Knots Landing (TV Series)
Investigator / Superior / Surveillant
- The Fan Club (1990) ... Investigator
- Wrong for Each Other (1990) ... Superior
- The Grim Reaper (1990) ... Surveillant
 1990 Equal Justice (TV Series)
Detective Stassen
- The Price of Justice (1990) ... Detective Stassen
 1990 Jake and the Fatman (TV Series)
Jameson
- You Took Advantage of Me (1990) ... Jameson
 1990 Mancuso, FBI (TV Series)
- Adamant Eve (1990)
 1990 Bad Influence
Dr. Fielding
 1990 Dallas (TV Series)
Captain Holgar
- A Tale of Two Cities (1990) ... Captain Holgar
 1989 Baywatch (TV Series)
Arnold Anderson
- The Cretin of the Shallows (1989) ... Arnold Anderson
 1989 Generations (TV Series)
Captain Parker
- Episode #1.172 (1989) ... Captain Parker (credit only)
- Episode #1.171 (1989) ... Captain Parker
 1989 Hunter (TV Series)
I.A.D. Officer #2
- Shoot to Kill (1989) ... I.A.D. Officer #2
 1988 Shakedown on the Sunset Strip (TV Movie)
Deputy Chief Evans
 1988 The Couch Trip
Police Captain
 1987 Hooperman (TV Series)
Chapell
- Aria da Capo (1987) ... Chapell
 1987 Six Against the Rock (TV Movie)
Officer Bill Miller
 1987 Convicted: A Mother's Story (TV Movie)
 1986 The New Mike Hammer (TV Series)
Sergeant Cramer
- Dead Pigeon (1986) ... Sergeant Cramer
 1986 Stingray (TV Series)
Desk Sgt.
- Sometimes You Gotta Sing the Blues (1986) ... Desk Sgt.
 1986 Betrayed by Innocence (TV Movie)
Bailiff
 1985-1986 Hill Street Blues (TV Series)
Mario / Detective McConnell
- Say It as It Plays (1986) ... Mario
- Dr. Hoof and Mouth (1985) ... Detective McConnell
 1985 MacGyver (TV Series)
Vendor
- The Prodigal (1985) ... Vendor
 1985 Knight Rider (TV Series)
Alfie Girdler
- Knight Racer (1985) ... Alfie Girdler
 1985 Misfits of Science (TV Series)
Technician
- Guess What's Coming to Dinner (1985) ... Technician
 1985 Simon & Simon (TV Series)
Minister
- Love and/or Marriage (1985) ... Minister
 1985 T.J. Hooker (TV Series)
Mr. Zewecki
- The Chicago Connection (1985) ... Mr. Zewecki
 1985 St. Elsewhere (TV Series)
Police Officer
- Cheers (1985) ... Police Officer
 1985 Cover Up (TV Series)
Limo Driver
- Murder Offshore (1985) ... Limo Driver
 1984 Cagney & Lacey (TV Series)
DPA Clerk
- Baby Broker (1984) ... DPA Clerk
 1984 Automan (TV Series)
The Policeman
- Zippers (1984) ... The Policeman
 1983 Manimal (TV Series)
Man
- Breath of the Dragon (1983) ... Man
 1978 Someone's Watching Me! (TV Movie)
Frimsin
 1977-1978 Kojak (TV Series)
I. A. D. Man / Lawton
- The Captain's Brother's Wife (1978) ... I. A. D. Man
- I Could Kill My Wife's Lawyer (1977) ... Lawton
 1977 A Killing Affair (TV Movie)
Det, Shoup
 1977 Police Story (TV Series)
Det. Leo Luna
- The Blue Fog (1977) ... Det. Leo Luna
 1976-1977 The Rockford Files (TV Series)
Victor Sherman / Lt. Hayes / Todd Morris
- There's One in Every Port (1977) ... Victor Sherman
- Return to the 38th Parallel (1976) ... Lt. Hayes
- Foul on the First Play (1976) ... Todd Morris
 1976 Police Woman (TV Series)
Fireman
- Tender Soldier (1976) ... Fireman
 1976 The Blue Knight (TV Series)
SWAT Commander
- To Kill a Tank (1976) ... SWAT Commander
 1976 Collision Course: Truman vs. MacArthur (TV Movie)
Gen. Hoyt Vandenberg
 1973 The Exorcist
Language Lab Director
Show Show Self (2 credits)

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Did You Know?

Trivia:

Most notable as a police chief in L.A. Confidential (1997) and as an astronomer (who spots and reports the giant asteroid) in Armageddon (1998). See more »

Star Sign:

Aquarius

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