Justin Bartha (born July 21, 1978) is an American film and television actor, best known for his co-starring role as Riley Poole in the National Treasure feature films and as Doug Billings in The Hangover.

Filmography

• 2026Influenced — Jordan
• Unaccustomed Earth — Adam
• 2025Nuked — Jack Langer
• 2022Dear Zoe — David Gladstone
• National Treasure: Edge of History — Riley Poole
• 2021Sweet Girl — Simon Keeley
• 2019Against the Clock — Peter Hobbs
• 2019Driven — Howard Weitzman
• Godfather of Harlem — Robert Morgenthau
• 2019The Big Break — Stephen
• The Other Two — Justin Bartha
• 2018Sorry For Your Loss — Ken
• 2017Sticky Notes — Bryan
• The Good Fight — Colin Morello
• Atlanta — Marshall Johnson
• Cooper Barrett's Guide to Surviving Life — Josh Barret
• 2016White Girl — Kelly
• 2013Brahmin Bulls — David
• 2013CBGB — Stiv Bators
• 2013The Hangover Part III — Doug Billings
• 2012Dark Horse — Richard
• The New Normal — David Sawyer
• 2011The Hangover Part II — Doug Billings
• 2010Holy Rollers — Yosef Zimmerman
• 2009Every Jack Has a Jill — Jack, Executive Producer
• 2009The Hangover — Doug Billings
• 2009The Rebound — Aram Finklestein
• WWII in HD — Jack Werner (voice)
• 2008New York, I Love You — Justin, Sarah's Boyfriend
• 2007National Treasure: Book of Secrets — Riley Poole
• 2006Failure to Launch — Ace
• Teachers — Jeff Cahill
• 2005Trust the Man — Jasper Bernard
• 2004National Treasure — Riley Poole
• 2004Strip Search
• 2003Gigli — Brian
• 199854 — Clubgoer (uncredited)
• Hal

Appearances as themselves (3)

• 2013Wolfpack Only: The Hangover Retrospective — Self
• Conan — Self - Guest
• The Ellen DeGeneres Show — Self