"Lyla and Louis, a singer and a musician, fall in love, but are soon compelled to separate. Lyla is forced to give up her newborn but unknown to her, he grows up to become a musical genius."
Freddie Highmore
as August Rush
Keri Russell
as Lyla Novacek
Jonathan Rhys Meyers
as Louis Connelly
Terrence Howard
as Richard Jeffries
Robin Williams
as Maxwell "Wizard" Wallace
William Sadler
as Thomas Novacek
Marian Seldes
as The Dean
Mykelti Williamson
as Reverend James
Leon Thomas III
as Arthur
Aaron Staton
as Nick
Alex O'Loughlin
as Marshall
Jamia Simone Nash
as Hope
Ronald Guttman
as Professor
Bonnie McKee
as Lizzy
Michael Drayer
as Mannix
Jamie O'Keeffe
as Steve
Becki Newton
as Jennifer
Tyler McGuckin
as Peter
Megan Gallagher
as Megan
Anais Martinez
as Backbeat
Bilal Bishop
as Roller Bull
Michael R. Hammonds II
as Feedback
Timmy Mitchum
as Joey
Henry Caplan
as Bill
John Knox
as Club Manager
Amy V. Dewhurst
as Receptionist
Victor Verhaeghe
as Cop
Darrie Lawrence
as Old Neighbor
Sean Haberle
as Frank
Jamal Joseph
as Driver
Robert Aberdeen
as Record Executive
Georgia Creighton
as Apartment Owner
Joshua Jaymz Doss
as Orphanage Kid
Craig Johnson
as Orphanage Boy
Dominic Colón
as Policeman
Zach Page
as Child Guitar Player
Charles Mack
as Gospel Soloist
Amma Agyapon
as Gospel Singer
Adia Beckford
Dietrice A. Bolden
Dina Gardener
Luther Isler
Raymond Johnson
Joyce Walker Joseph
Willana Mack
Lamar Antwon Robinson
Talif Showers
Carlton Taylor
Yvette Bodrick
as Street Sound Circle
Crystal A. Elliott
Jindai Joseph
Jacquelen Singleton
Travis Veada
Jasmine Pauline Wigfall
John Farrer
as Violinist (uncredited)
Paul Thornton
as Alcoholic (uncredited)
Kirsten Sheridan
Director
Louise Goodsill
Executive Producer
Miky Lee
Amanda Mackey
Casting
James V. Hart
Screenplay
Mark Mancina
Original Music Composer
Robert Greenhut
John Mathieson
Director of Photography
Lionel Wigram
Nick Castle
Richard Barton Lewis
Producer
Ralph Kamp
Cathy Sandrich Gelfond
William Steinkamp
Editor
Michael Shaw
Production Design
Frank L. Fleming
Costume Design
Mario Ventenilla
Art Direction
Paul Castro
Story
Richard F. Esposito
Hairstylist
Felice Diamond
Makeup Artist
Carol Silverman
Set Decoration
Gabrielle Jerou
Associate Producer
Nicholas Bernstein
Location Manager
Unit Production Manager
Garson Yu
Title Designer
Kate Bulpitt
Casting Associate
Jessica Lichtner
Script Supervisor
Bonnie Hlinomaz
Production Supervisor
Farrah Fox-Collis
Cesar Quinones
Location Scout
Blaise Corrigan
Stunt Coordinator
John Cenatiempo
Stunts