William Duffy
- Acting
Biography
William Duffy is an actor.
Known for
Filmography
- A West Wing Special to Benefit When We All Vote · Larry
- Bosch · Vault Attendant
- Scandal · Ralph Greenwald
- Parenthood · Mr. Carlson
- The Ascent · Thomas Shaw
- The Mentalist · TSA Agent #2
- Carpoolers
- Heroes · ER Doctor
- Waist Deep · Newscaster #2
- Karla · Detective Porter
- Criminal Minds · Dr. Larson
- It's Always Sunny in Philadelphia · Hedge Fund Guy
- Sniper 3 · Richard Addis
- NCIS · Harris Cobb
- The O.C. · Voice
- American Dreams · Father Gregory
- The Division · Commander Jackson
- The West Wing · Staffer
- Blast from the Past · Workman #1
- Double Tap · Gas Man
- Betrayed by Love · Paxton
- Hearts Afire · Doctor
- Beverly Hills, 90210 · Doorman
- Law & Order · CSU Technician
- The Two Jakes · Desk Sergeant
- Death Game · Executive producer
- Loving · Jay
- Brainstorm · Orderly (uncredited)