John Mahoney

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Known For

Credits

Cast Credits

$#*! My Dad Says (2010)
Guest starring as Lt. Col. Wally Durham
Hot in Cleveland (2010)
Guest starring as Roy (6 episodes)
In Treatment (2008)
Guest starring as Walter Barnett (7 episodes)
Burn Notice (2007)
Guest starring as Management (2 episodes)
  • Episode 3x16: Devil You Know (Mar 4, 2010) [Special Guest Star]
  • Episode 2x16: Lesser Evil (Mar 5, 2009) [Special Guest Star]
Mobsters (2007)
Guest starring as Narrator
  • Episode 1x11: Al Capone (Sep 2, 2007) [Special Guest Star]
Gary the Rat (2003)
Guest starring as Steele
Foyle's War (2002)
Guest starring as Andrew Del Mar
  • Episode 9x01: High Castle (Jan 4, 2015) [Special Guest Star]
Teacher's Pet (2000)
Guest starring as Tim Tim Tim
Becker (1998)
Guest starring as Father Joe D'Andrea
Tracey Takes On... (1996)
Guest starring as Jeffrey Ayliss
3rd Rock from the Sun (1996)
Guest starring as Dr. Leonard Hanlin
ER (1994)
Guest starring as Bennett Cray
Frasier (1993)
Starring as Martin Crane (264 episodes)
The Simpsons (1989)
Guest starring as Dr. Robert Terwilliger, Sr.
Screenplay (1986)
Guest starring as Walter Partin
Cheers (1982)
Guest starring as Sy Flembeck
American Playhouse (1982)
Guest starring as Artie Shaughnessy