Acting
William Duffy is an actor.
MovieA West Wing Special to Benefit When We All Vote
2020
as Larry
TVBosch
2015
as Vault Attendant
TVScandal
2012
as Ralph Greenwald
TVParenthood
2010
as Mr. Carlson
MovieThe Ascent
2010
as Thomas Shaw
TVThe Mentalist
2008
as TSA Agent #2
TVCarpoolers
2007
TVHeroes
2006
as ER Doctor
MovieWaist Deep
2006
as Newscaster #2
MovieKarla
2006
as Detective Porter
TVCriminal Minds
2005
as Dr. Larson
TVIt's Always Sunny in Philadelphia
2005
as Hedge Fund Guy
MovieSniper 3
2004
as Richard Addis
TVNCIS
2003
as Harris Cobb
TVThe O.C.
2003
as (voice)
TVAmerican Dreams
2002
as Father Gregory
TVThe Division
2001
as Commander Jackson
TVThe West Wing
1999
as Staffer
MovieBlast from the Past
1999
as Workman #1
MovieDouble Tap
1997
as Gas Man
MovieBetrayed by Love
1994
as Paxton
TVHearts Afire
1992
as Doctor
TVBeverly Hills, 90210
1990
as Doorman
TVLaw & Order
1990
as CSU Technician
MovieThe Two Jakes
1990
as Desk Sergeant
MovieLoving
1970
as Jay
MovieBrainstorm
1965
as Orderly (uncredited)
