Jeff Bridges

Kevin Flynn / Clu

Garrett Hedlund

Sam Flynn

Olivia Wilde

Quorra

Bruce Boxleitner

Alan Bradley / Tron

James Frain

Jarvis

Beau Garrett

Gem

Michael Sheen

Castor / Zuse

Serinda Swan

Siren #2

Yaya DaCosta

Siren #3

Elizabeth Mathis

Siren #4

Kis Yurij

Half Faced Man

Conrad Coates

Bartik

Ron Selmour

Chattering Homeless Man

Dan Joffre

Key Security Guard #1 - Ernie

Darren Dolynski

Young Man on Recognizer

Kofi Yiadom

Disc Opponent #2 / Black Guard

Steven Lisberger

Shaddix

Donnelly Rhodes

Grandpa Flynn

Belinda Montgomery

Grandma Flynn

Owen Best

7 Year Old Sam Flynn

Matt Ward

Iso Boy

Dean Redman

Light Jet Sentry

Mi-Jung Lee

Debra Chung

Christopher Logan

Nervous Program

Sheldon Yamkovy

Destitute Program

Dale Wolfe

Irv Culpepper

Joanne Wilson

Reporter #1

Catherine Lough Haggquist

Reporter #2

Thomas Bradshaw

Security Guard #2

Shafin Karim

East Indian Taxi Driver

Rob Daly

Lead Sentry

Mike Ching

Blue Gaming Program

Michael Teigen

Green Gaming Program

Brent Stait

Purple Gaming Program

Shaw Madson

Reporter #3

Amy Esterle

Young Mrs. Flynn

Jeffrey Nordling

Richard Mackey

Christine Adams

Claire Atkinson

Kate Gajdosik

News Anchor

Jack McGee

Police Photographer

John Reardon

Young Kevin Flynn / Clu Performance Double

Edie Mirman

Computer Voice (voice)

Aaron Toney

Black Guard

Patrick Sabongui

Gaming Program 1 - S

Cillian Murphy

Edward Dillinger (uncredited)

Brandon Jay McLaren

Sobel (uncredited)

Thomas Bangalter

Masked DJ

Guy-Manuel de Homem-Christo

Masked DJ

Hugo Steele

End of Line Club Bouncer (uncredited)