Known for
Popular titles
Photos
More stills of John O'Brien
Filmography
Movies and shows, newest first
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2024
Good Grief
Movie Dan
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2022
Cheaper by the Dozen
Movie Principal
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2021
This Game's Called Murder
Movie Man in Suit
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2021
Hacks
TV show Duncan
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2020
Perry Mason
TV show Ernie Magnuson
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2019
Bob Hearts Abishola
TV show James
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2018
Dirty John
TV show Cameron Scott
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2018
Light as a Feather
TV show Reverend Fahey
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2018
9-1-1
TV show Rod Billings
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2017
S.W.A.T.
TV show Weber
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2016
The Last Heist
Movie Manager Mark
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2015
Superstore
TV show Mike
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2015
Mortdecai
Movie Butler
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2014
Transparent
TV show Professor
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2014
Young & Hungry
TV show Mr. Klepfer
-
2013
The Crazy Ones
TV show Larry
More credits
-
2013
Mom
TV show Waiter
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2012
The Mindy Project
TV show Dr. Jones
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2012
Don't Trust the B---- in Apartment 23
TV show Tom
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2012
Being Flynn
Movie Airline Pilot
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2011
Austin & Ally
TV show Mr. Neidermeyer
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2011
Workaholics
TV show Doctor
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2011
Shameless
TV show Father Monroe
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2010
Law & Order: LA
TV show Scott Hancox
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2010
Better With You
TV show Florist
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2010
Pretty Little Liars
TV show Principal Hackett
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2010
Victorious
TV show Mr. Mooney
-
2009
Community
TV show Chaplin
-
2008
Eleventh Hour
TV show Manager
-
2008
The Middleman
TV show Newscaster
-
2007
Chuck
TV show Older CIA Tech
-
2007
Mad Men
TV show Phil Kennedy
-
2006
Flicka
Movie Mr. Masterson
-
2006
Ugly Betty
TV show Joe of Happy Homes
-
2005
Criminal Minds
TV show Dr. Meyer
-
2005
Grey's Anatomy
TV show Lab Tech Jeffrey
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2005
Medium
TV show Hotel Clerk
-
2004
Desperate Housewives
TV show Dr. Wheeler
-
2004
Boston Legal
TV show Clerk #2
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2003
NCIS
TV show Bruce
