William Duffy
View on IMDb ↗William Duffy is an actor.
Known for
The Mentalist
Criminal Minds
The West Wing
It's Always Sunny in Philadelphia
Bosch
A West Wing Special to Benefit When We All Vote
Hearts Afire
The O.C.
NCIS
ParenthoodFilmography (27)
- 2020
A West Wing Special to Benefit When We All VoteLarry - 2015
BoschVault Attendant - 2012
ScandalRalph Greenwald - 2010
ParenthoodMr. Carlson - 2010
The AscentThomas Shaw - 2008
The MentalistTSA Agent #2 - 2007
Carpoolers - 2006
HeroesER Doctor - 2006
Waist DeepNewscaster #2 - 2006
KarlaDetective Porter - 2005
Criminal MindsDr. Larson - 2005
It's Always Sunny in PhiladelphiaHedge Fund Guy - 2004
Sniper 3Richard Addis - 2003
The O.C.(voice) - 2003
NCISHarris Cobb - 2002
American DreamsFather Gregory - 2001
The DivisionCommander Jackson - 1999
The West WingStaffer - 1999
Blast from the PastWorkman #1 - 1997
Double TapGas Man - 1994
Betrayed by LovePaxton - 1992
Hearts AfireDoctor - 1990
Beverly Hills, 90210Doorman - 1990
Law & OrderCSU Technician - 1990
The Two JakesDesk Sergeant - 1970
LovingJay - 1965
BrainstormOrderly (uncredited)