Robert De Niro Murray Franklin
Bradley Cooper Producer
Joaquin Phoenix Arthur Fleck
Shea Whigham Detective Burke
Zazie Beetz Sophie Dumond
Justin Theroux Ethan Chase (uncredited)
Brett Cullen Thomas Wayne
Bill Camp Detective Garrity
Brian Tyree Henry Carl (Arkham Clerk)
Bob Kane Characters
Frances Conroy Penny Fleck
Douglas Hodge Alfred Pennyworth
Todd Phillips Producer, Writer, Director
Glenn Fleshler Randall
John Cenatiempo Aftermath Police Officer, Stunts
Isabella Ferreira Flirting Woman on the Bus (uncredited)
Hannah Gross Young Penny
Bill Finger Characters
Marc Maron Gene Ufland
Josh Pais Hoyt Vaughn
April Grace Arkham Psychiatrist
Bryan Callen Haha's Stripper
Sharon Washington Social Worker
Frank Miller Thanks
Frank Wood Dr. Stoner
Peter Epstein Stunts
David Webb Co-Producer, First Assistant Director
Bruce Berman Executive Producer
George Drakoulias Music Supervisor
Blaise Corrigan Taxi Driver (uncredited)
Brendan Patrick Connor Mr. Slotnick (uncredited)
Tod A. Maitland Sound Mixer
Dan O'Connell Foley Artist
Hildur Guðnadóttir Original Music Composer
Kevin Michael Murphy Stunts
John T. Cucci Foley Artist
Emma Tillinger Koskoff Producer
Ray Iannicelli Haha's Clown
Sondra James Dr. Sally
Scott Silver Writer
Airon Armstrong Stunt Double
David Gibson WBC News Anchor
Michael Benz Wall Street Three
Leigh Gill Gary
Keith Giffen Thanks
Carolina Jiménez Layout
Geoffrey Haley "A" Camera Operator, Steadicam Operator
Murphy Guyer Barry O'Donnell
Jeff McCarthy NCB Anchor
Randall Poster Music Supervisor
Lawrence Sher Director of Photography, Cinematography
Sam Morril Open Mic Comic
Jill Bogdanowicz Digital Intermediate Colorist
Alan Robert Murray Supervising Sound Editor
Jerry Robinson Characters
Michael Uslan Executive Producer
Mark Friedberg Production Design
Jeff Atmajian Orchestrator
Dean A. Zupancic Sound Re-Recording Mixer
Aaron L. Gilbert Executive Producer
Kay Georgiou Hair Department Head
Ben Warheit Wall Street Three
Chris Cenatiempo Stunts
Thomas J. O'Connell ADR Mixer
Peter Hans Benson Good Morning Host
Jane Fergus IBN Anchorwoman
Chris Redd Comedy Club Emcee
Kira Roessler Supervising Dialogue Editor, Supervising ADR Editor
Richard Duarte Foley Mixer
Mark Bridges Costume Design
Jill Brown Stunts
Richard Baratta Murray Franklin Band, Executive Producer