Michael C. Mahon
Known For

Law & Order

Law & Order

Private Practice

ER

How I Met Your Mother

Married... with Children

Diagnosis: Murder

Scandal
All Movies (24)
- Mercy2026 · as Booking Sergeant
- Fatal Affair2020 · as Driver
- A Tale of Two Coreys2018 · as Teacher
- His Secret Past2016 · as Peterson
- Get a Job2016 · as Braddock
- The Flight Before Christmas2015 · as Santa Claus
- Ominous2015 · as Rachel's Doctor
- Kidnapped: The Hannah Anderson Story2015 · as Reporter 1
- High School Possession2014 · as Coach Burdette
- Gangster Squad2013 · as Citz Hall Reporter
- Christmas Twister2012 · as Doug
- Gridiron Gang2006 · as Field Coach
- Tomb of Terror2004 · as Detective Greenberg
- Shattered Mind1996 · as Jack
- Josh Kirby... Time Warrior: Last Battle for the Universe1996 · as Donald Kirby (as Michael Mahon)
- Oblivion 2: Backlash1996 · as Sidekick
- Dark Angel: The Ascent1994 · as Detective Greenberg
- Risk1993 · as Security Guard
- Malcolm X1992 · as Prisoner
- Chameleons1989 · as Michael
- Zits1988 · as FBI Agent in Car
- Wall Street1987 · as Trader - Office
- Sleepaway Camp1983 · as Hal
- Full Moon Rising: The Charles Band Story— · as Self
All TV Shows (21)
- Side Quest2025 · as Joshua
- The Orville2017 · as Altox
- Scandal2012 · as Billy Joe Lee
- Private Practice2007 · as Detective Smith
- How I Met Your Mother2005 · as Grumpy Man
- Boston Legal2004 · as Officer James Gilmore
- Las Vegas2003 · as Ben Wilcox
- Las Vegas2003 · as Greg Randalls
- Brimstone1998 · as Carl Traynor
- The King of Queens1998 · as Mike
- The King of Queens1998 · as Mr. Rogers
- Beyond Belief: Fact or Fiction1997 · as Mr. Baker (segment "Precious")
- Profiler1996 · as Adam Thompson
- Baywatch Nights1995 · as Clean Cut
- ER1994 · as Joe
- One West Waikiki1994
- Diagnosis: Murder1993 · as Barry McCarthy
- Lois & Clark: The New Adventures of Superman1993 · as Brian
- Law & Order1990 · as Will Carter
- Law & Order1990 · as Policeman #2
- Married... with Children1987 · as Larry