Joaquin Phoenix Arthur Fleck
Brendan Gleeson Jackie Sullivan
Zazie Beetz Sophie Dumond
Paul Dini Characters
Ken Leung Dr. Victor Liu
Catherine Keener Maryanne Stewart
Lady Gaga Lee Quinzel, Music Consultant
Lawrence Sher Director of Photography
Don McManus Paddy Meyers' Producer
Tim Trella Stunts
Ray Lykins Victim's Dad, Stunts
Sweet P. Vaughn Makeup Artist
David Armstrong Stunts
Declan Mulvey Stunts
Steve Coogan Paddy Meyers
Matt Berberi Stunt Double
Hudson Oz Joker Doppelganger
George Drakoulias Music Supervisor
Ashton Moio Joker Fan #2
Sylvain Chomet Animation
Jimmy Walker Jr. E Ward Inmate
Jacob Lofland Ricky Meline
Emma Tillinger Koskoff Producer
Meghan Currier Music Coordinator
Eliza Coleman Stunts
Gregory Irwin First Assistant "A" Camera
Todd Phillips Director, Writer, Producer, Original Film Writer
Laurie Dawn Reporter
Gattlin Griffith Masked Joker Driver
Daniel Leavitt Stunts
Stephen Stanton Stan L. Brooks (voice)
Bob Kane Characters
Jimmy Smagula Additional Guard
Rick Chavez Assistant Property Master
Alfred Rubin Thompson Ernie Bullock
John Damiani Key Makeup Artist
Bill Smitrovich Judge Herman Rothwax
Bill Finger Characters
Casey Burke Singer (uncredited)
John Lacy Arkham Guard
Michael Kaleta Boom Operator
David Webb First Assistant Director
Wayne Dalglish Stunts
Ross Kohnstam Stunts
Ethan Van der Ryn Supervising Sound Editor, Sound Designer
Mac Brandt Arkham Guard
Hildur Guðnadóttir Original Music Composer
Will Ropp Joker Fan #1
Jill Bogdanowicz Other
Tim Rigby Stunts
Dan Webster Supervising Art Director
Scott Silver Writer, Executive Producer, Original Film Writer
Martina Sykes Makeup Artist
Erik Aadahl Supervising Sound Editor
Andy Gill Stunts
Richard Epper Utility Stunts
Bruce Timm Characters
Brian Donahue Additional Guard
Mia Bauman Makeup Artist
Kay Georgiou Hair Designer
Murphy Guyer White Chapel Minister
Harry Lawtey Harvey Dent
Doug Coleman Stunts
Brett Smrz Stunts
Wayne Dehart E Ward Inmate
George B. Colucci Jr. Stunts
Aaron Hurvitz Location Scout
Brent Fletcher Stunts
Leigh Gill Gary Puddles
Brian Machleit Stunt Coordinator
Gregg Daniel Music Teacher
Francine Maisler Casting