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William Duffy
Acting
William Duffy is an actor.
Known For
8.4
TV
The Mentalist
2008
8.3
TV
Criminal Minds
2005
8.3
TV
It's Always Sunny in Philadelphia
2005
8.3
TV
The West Wing
1999
7.9
TV
Bosch
2015
7.9
A West Wing Special to Benefit When We All Vote
2020
7.8
TV
The O.C.
2003
7.6
TV
NCIS
2003
7.5
TV
Parenthood
2010
7.5
TV
Heroes
2006
Filmography
28 credits
All (28)
Movies (12)
TV (16)
7.9
A West Wing Special to Benefit When We All Vote
2020
7.9
TV
Bosch
2015
7.2
TV
Scandal
2012
7.5
TV
Parenthood
2010
3.2
The Ascent
2010
8.4
TV
The Mentalist
2008
6.9
TV
Carpoolers
2007
7.5
TV
Heroes
2006
6.5
Waist Deep
2006
5.4
Karla
2006
8.3
TV
Criminal Minds
2005
8.3
TV
It's Always Sunny in Philadelphia
2005
5.4
Sniper 3
2004
7.6
TV
NCIS
2003
7.8
TV
The O.C.
2003
5.1
TV
American Dreams
2002
7.1
TV
The Division
2001
8.3
TV
The West Wing
1999
6.8
Blast from the Past
1999
5.0
Double Tap
1997
5.0
Betrayed by Love
1994
7.3
TV
Hearts Afire
1992
7.3
TV
Beverly Hills, 90210
1990
7.3
TV
Law & Order
1990
6.0
The Two Jakes
1990
5.7
Death Game
1977
5.8
Loving
1970
6.0
Brainstorm
1965
