Joaquin Phoenix Arthur Fleck
Brendan Gleeson Jackie Sullivan
Zazie Beetz Sophie Dumond
Catherine Keener Maryanne Stewart
Bruce Timm Characters
Ken Leung Dr. Victor Liu
Jacob Lofland Ricky Meline
Bob Kane Characters
Steve Coogan Paddy Meyers
Harry Lawtey Harvey Dent
Gattlin Griffith Masked Joker Driver
Lady Gaga Songs, Lee Quinzel, Music Consultant
Connor Storrie Young Inmate
Mac Brandt Arkham Guard
Bill Smitrovich Judge Herman Rothwax
Don McManus Paddy Meyers' Producer
Todd Phillips Original Film Writer, Director, Writer, Producer
Scott Silver Executive Producer, Original Film Writer, Writer
Stephen Stanton Stan L. Brooks (voice)
Francine Maisler Casting
Bill Finger Characters
Tim Rigby Stunts
George Drakoulias Music Supervisor
Paul Dini Characters
Casey Burke Girl #1 (uncredited)
Will Ropp Joker Fan #1
June Carryl Dr. Louise Beatty
Chris Barnes Stunts
Ashton Moio Joker Fan #2
Erik Aadahl Supervising Sound Editor
George Carroll Arkham Guard
Shauna Duggins Stunts
Leigh Gill Gary Puddles
George B. Colucci Jr. Stunts
Anthony Tittanegro Executive Producer
Murphy Guyer White Chapel Minister
Michael Uslan Executive Producer
Ethan Van der Ryn Sound Designer, Supervising Sound Editor
John Lacy Arkham Guard
Andy Gill Stunts
Jerry Robinson Characters
Lawrence Sher Director of Photography
Dan O'Connell Foley Artist
Doug Coleman Stunts
Geoffrey Haley "C" Camera Operator
Mark Friedberg Executive Producer, Production Design
Hildur Guðnadóttir Original Music Composer
Eliza Coleman Stunts
Ray Lykins Stunts, Victim's Dad
Wayne Dehart E Ward Inmate
Ross Kohnstam Stunts
Ajgie Kirkland E Ward Inmate
Tim Trella Stunts
Jill Bogdanowicz Other
Michael Thurman Set Dresser
Gregory Irwin First Assistant "A" Camera
Jimmy Walker Jr. E Ward Inmate
John T. Cucci Foley Artist
Wayne Dalglish Stunts
Randall Poster Music Supervisor
Craig Baxley Jr. Stunts
Andrew Lary Executive Producer
Karen Teliha B Ward Music Class Patient #14 (uncredited)
Gregg Daniel Music Teacher
Troy Metcalf Music Room Inmate #1 (uncredited)
Jon Greasley Dialogue Editor
Jess King Additional Guard
Maciej Kuciara Concept Artist
Brett Smrz Stunts
Jason Oliver ADR Mixer
Sharon Washington Debra Kane
Pete Chiappetta Executive Producer