← Back to explore
William Duffy
Acting
Biography
William Duffy is an actor.
Filmography23 titles
The Mentalist
2008as TSA Agent #2
2008as TSA Agent #2
It's Always Sunny in Philadelphia
2005as Hedge Fund Guy
2005as Hedge Fund Guy
Criminal Minds
2005as Dr. Larson
2005as Dr. Larson
The West Wing
1999as Staffer
1999as Staffer
A West Wing Special to Benefit When We All Vote
2020as Larry
2020as Larry
Bosch
2015as Vault Attendant
2015as Vault Attendant
Hearts Afire
as Doctor
as Doctor
The O.C.
2003as (voice)
2003as (voice)
NCIS
2003as Harris Cobb
2003as Harris Cobb
Parenthood
2010as Mr. Carlson
2010as Mr. Carlson
Heroes
2006as ER Doctor
2006as ER Doctor
Beverly Hills, 90210
1990as Doorman
1990as Doorman
Law & Order
1990as CSU Technician
1990as CSU Technician
Scandal
2012as Ralph Greenwald
2012as Ralph Greenwald
Blast from the Past
1999as Workman #1
1999as Workman #1
Waist Deep
2006as Newscaster #2
2006as Newscaster #2
Brainstorm
1965as Orderly (uncredited)
1965as Orderly (uncredited)
The Two Jakes
1990as Desk Sergeant
1990as Desk Sergeant
Loving
1970as Jay
1970as Jay
Death Game
1977Executive Producer
1977Executive Producer
Sniper 3
2004as Richard Addis
2004as Richard Addis
Karla
2006as Detective Porter
2006as Detective Porter
Double Tap
1997as Gas Man
1997as Gas Man