Robert De Niro Murray Franklin
Bradley Cooper Producer
Joaquin Phoenix Arthur Fleck
Zazie Beetz Sophie Dumond
Marc Maron Gene Ufland
Shea Whigham Detective Burke
Justin Theroux Ethan Chase (uncredited)
Brett Cullen Thomas Wayne
Frances Conroy Penny Fleck
Bob Kane Characters
Bill Camp Detective Garrity
Brian Tyree Henry Carl (Arkham Clerk)
Glenn Fleshler Randall
Bryan Callen Haha's Stripper
Frank Miller Thanks
Isabella Ferreira Flirting Woman on the Bus (uncredited)
Hannah Gross Young Penny
John Cenatiempo Aftermath Police Officer, Stunts
Bill Finger Characters
April Grace Arkham Psychiatrist
Todd Phillips Producer, Writer, Director
Scott Silver Writer
Douglas Hodge Alfred Pennyworth
Josh Pais Hoyt Vaughn
George Drakoulias Music Supervisor
Michael Uslan Executive Producer
Jeff Atmajian Orchestrator
Peter Epstein Stunts
Sondra James Dr. Sally
Airon Armstrong Stunt Double
Geoffrey Haley "A" Camera Operator, Steadicam Operator
Aaron L. Gilbert Executive Producer
J. M. DeMatteis Thanks
Ray Iannicelli Haha's Clown
John T. Cucci Foley Artist
Leigh Gill Gary
Dan O'Connell Foley Artist
Jerry Robinson Characters
Lawrence Sher Cinematography, Director of Photography
Keith Giffen Thanks
Frank Wood Dr. Stoner
Bruce Berman Executive Producer
Mark Friedberg Production Design
Richard Burden Stunts
Richard Duarte Foley Mixer
Hildur Guðnadóttir Original Music Composer
Murphy Guyer Barry O'Donnell
Thomas J. O'Connell ADR Mixer
Blaise Corrigan Taxi Driver (uncredited)
Gregory Irwin First Assistant "A" Camera
Michael Benz Wall Street Three
Jill Bogdanowicz Digital Intermediate Colorist
Randall Poster Music Supervisor
James Ciccone Murray Franklin Band
Sam Morril Open Mic Comic
Jill Brown Stunts
Dennis Jay Funny Gotham Citizen (uncredited)
Kim Jennings Storyboard Artist
Tod A. Maitland Sound Mixer
Kira Roessler Supervising ADR Editor, Supervising Dialogue Editor
Cameron Steenhagen Dialogue Editor
Steve Ramsey Chief Lighting Technician
Keith Buterbaugh Band Leader
Dante Pereira-Olson Bruce Wayne
Jeff Groth Editor
Sharon Washington Social Worker
Jeff McCarthy NCB Anchor
Chris Redd Comedy Club Emcee
Frank Alfano Stunts
Edwin Rivera Visual Effects Supervisor
Joel Weaver Assistant Property Master
Kerry Roberts Payroll Accountant