HomePeopleWilliam Duffy
William Duffy
IMDb

William Duffy

Acting

GenderMale

11

Movies

16

TV Shows

1

Crew Credits

55

Years Active

★ 1

Popularity

William Duffy is an actor.

Known For

Top 8 by popularity

Criminal Minds

Criminal Minds

★ 8.32005

Criminal Minds

2005★ 8.3

as Dr. Larson

Law & Order

Law & Order

★ 7.31990

Law & Order

1990★ 7.3

as CSU Technician

The Mentalist

The Mentalist

★ 8.42008

The Mentalist

2008★ 8.4

as TSA Agent #2

NCIS

NCIS

★ 7.62003

NCIS

2003★ 7.6

as Harris Cobb

The West Wing

The West Wing

★ 8.31999

The West Wing

1999★ 8.3

as Staffer

It's Always Sunny in Philadelphia

It's Always Sunny in Philadelphia

★ 8.32005

It's Always Sunny in Philadelphia

2005★ 8.3

as Hedge Fund Guy

Beverly Hills, 90210

Beverly Hills, 90210

★ 7.31990

Beverly Hills, 90210

1990★ 7.3

as Doorman

Heroes

Heroes

★ 7.42006

Heroes

2006★ 7.4

as ER Doctor

Filmography

11 titles

Blast from the Past1999Blast from the Pastas Workman #1 ★ 6.8 Watch Karla2006Karlaas Detective Porter ★ 5.4 Watch Sniper 32004Sniper 3as Richard Addis ★ 5.5 Watch Double Tap1997Double Tapas Gas Man ★ 5.1 Watch Waist Deep2006Waist Deepas Newscaster #2 ★ 6.6 Watch The Two Jakes1990The Two Jakesas Desk Sergeant ★ 6.0 Watch A West Wing Special to Benefit When We All Vote2020A West Wing Special to Benefit When We All Voteas Larry ★ 7.9 Watch Brainstorm1965Brainstormas Orderly (uncredited) ★ 6.1 Watch Betrayed by Love1994Betrayed by Loveas Paxton ★ 6.5 Watch Loving1970Lovingas Jay ★ 6.0 Watch The Ascent2010The Ascentas Thomas Shaw ★ 3.2 Watch

2026 filmOnline