Bruce Willis as John McClane

Justin Long as Matthew 'Matt' Farrell

Timothy Olyphant as Thomas Gabriel

Cliff Curtis as Agent Bowman

Maggie Q as Mai Linh

Jonathan Sadowski as Trey

Mary Elizabeth Winstead as Lucy McClane

Kevin Smith as Warlock

Yorgo Constantine as Russo

Cyril Raffaelli as Rand

Andrew Friedman as Casper

Christina Chang as Agent Taylor

Zeljko Ivanek as Agent Molina

Sung Kang as Raj

Chris Palermo as Del

Jake McDorman as Jim

Matt O'Leary as Clay

Yancey Arias as Agent Johnson

Allen Maldonado as Goatee

Chris Ellis as Scalvino

Nadine Ellis as Teller

Tim Russ as Agent Chuck Summer

Rosemary Knower as Mrs. Kaludis

Gerald Downey as Hoover Agent

Jim Cantafio as Deli Owner

Regina McKee Redwing as Nearby Agent

Tony Colitti as Chief Hazmat Agent

Tim DeZarn as Police Sergeant

Kurt David Anderson as Miller

Ethan Flower as Trader

Nick Jaine as Phone Guy

Joe Gerety as Jack Parry

Edward James Gage as On Duty PP Operator

David Walrod as Deli Customer

Edoardo Costa as Emerson

John Reha as Slacker Kid

Rick Cramer as MP Rodriguez

Vito Pietanza as DC Cop

Dennis Depew as DC Cop

Howard Tyrone Ferguson as DC Cop

John Lacy as EMT

Diana Gettinger as FBI Dispatcher

Melissa Knowles as Freeway Reporter

Chad Stahelski as Terrorist (uncredited)

Michael Papajohn as Gabriel's Henchman (uncredited)

Clay Cullen as Assassin (uncredited)

Matt McColm as Terrorist (uncredited)