Robin Williams Maxwell "Wizard" Wallace
Freddie Highmore August Rush
William Sadler Thomas Novacek
Terrence Howard Richard Jeffries
Keri Russell Lyla Novacek
Alex O'Loughlin Marshall
Jonathan Rhys Meyers Louis Connelly
Cathy Sandrich Gelfond Casting
Mykelti Williamson Reverend James
Marian Seldes The Dean
Becki Newton Jennifer
Leon G. Thomas III Arthur
John Cenatiempo Stunts
Aaron Staton Nick
Robert Greenhut Executive Producer, Unit Production Manager
Jamia Simone Nash Hope
Jamal Joseph Driver
Frank L. Fleming Costume Design
Carol Silverman Set Decoration
Zach Page Child Guitar Player
Sean Haberle Frank
Blaise Corrigan Stunt Coordinator
Paul Castro Story
Robert Aberdeen Record Executive
Timmy Mitchum Joey
Paul Thornton Alcoholic (uncredited)
Nick Castle Screenplay, Story
John Knox Club Manager
William Steinkamp Editor
Tyler McGuckin Peter
Ralph Kamp Executive Producer
Richard Barton Lewis Producer
Kate Bulpitt Casting Associate
Amanda Mackey Casting
Kirsten Sheridan Director
James V. Hart Screenplay
Michael Drayer Mannix
Miky Lee Executive Producer
Mark Mancina Original Music Composer
Bonnie McKee Lizzy
Ronald Guttman Professor
John Mathieson Director of Photography
Cesar Quinones Location Scout
Jessica Lichtner Script Supervisor
Dominic Colón Policeman
Michael Shaw Production Design
Lionel Wigram Executive Producer
Victor Verhaeghe Cop
Garson Yu Title Designer
Farrah Fox-Collis Casting Associate
John Farrer Violinist (uncredited)
Richard F. Esposito Hairstylist
Craig Johnson Orphanage Boy
Joshua Jaymz Doss Orphanage Kid
Dina Gardener Gospel Singer
Jamie O'Keeffe Steve
Jacquelen Singleton Street Sound Circle
Nicholas Bernstein Location Manager
Georgia Creighton Apartment Owner
Yvette Bodrick Street Sound Circle
Raymond Johnson Gospel Singer
Jindai Joseph Street Sound Circle
Adia Beckford Gospel Singer
Gabrielle Jerou-Tabak Associate Producer
Travis Veada Street Sound Circle
Bilal Bishop Roller Bull
Mario Ventenilla Art Direction
Talif Showers Gospel Singer
Amma Agyapon Gospel Singer
Joyce Walker Joseph Gospel Singer
Dietrice A. Bolden Gospel Singer
Felice Diamond Makeup Artist