Joaquin Phoenix Beau Wassermann
David Fincher Thanks
Parker Posey Elaine Bray
Paul Thomas Anderson Thanks
Bill Hader UPS Guy, Thanks
Rooney Mara Thanks
Amy Ryan Grace
Richard Kind Dr. Cohen
Julian Richings Strange Man
Hayley Squires Penelope
Spike Jonze Thanks
Stephen McKinley Henderson Therapist
Kylie Rogers Toni
Nathan Lane Roger
Archie Madekwe Laughing Man
Théodore Pellerin Beau’s Son
Ari Aster Original Film Writer, Director, Producer, Writer, A Neighbor of Beau's (uncredited)
Patti LuPone Mona Wassermann
Arthur Holden Duncan / God on Cloud / Hero Beau’s Wife
Bo Burnham Thanks
Denis Ménochet Jeeves
Zoe Lister-Jones Young Mona
Michael Gandolfini Beau’s Son
David Mamet Rabbi
Tyrone Benskin Rattled Businessman
Ruben Östlund Thanks
Joe Cobden News Correspondent (Brian Galloway)
Lorene Scafaria Thanks
Max Berger Additional Editor
Kwasi Songui Orphan Ladybug Man
Billy Mayo In Memory Of
Michael Esper Officer Johnson
Ryan Terk VFX Production Coordinator
Anana Rydvald Teen Elaine's Mother
Catherine Bérubé Hero Beau's Wife
Gord Robertson Monster Puppeteer
Julia Antonelli Teen Elaine
Tristan D. Lalla Costume Designer Orphan
Lars Knudsen Producer
Stephanie Herrera Martha
Pawel Pogorzelski Director of Photography
Paul Hsu Supervising Sound Editor, Sound Re-Recording Mixer
Teddy Blanks Title Designer
Fiona Crombie Production Design
Timo Argillander Executive Producer
Len Blavatnik Executive Producer
Manuel Tadros Cheapo Depot Cashier
Cat Lemieux Orphan Chorus Member
Patrick Kwok-Choon Orphan Hero
Harry Standjofski Superintendent / Catering Manager
Rod Smith First Assistant Director
Dave Flynch Foley Supervisor
Louis Craig Special Effects Supervisor
Bradley Fisher Birthday Boy Stab Man
Sylvain Landry Orphan Man w/Mandolin
Claude La Haye Production Sound Mixer
Marko Costanzo Foley Artist
Louis Morin Visual Effects Supervisor
David McKeown Stunt Coordinator
Luis Oliva Crust Punk (Eyes Gouged)
Lee Villeneuve Mona Henchman Who Throws Lawyer
Emmanuel Schwartz Orphan Chorus Member
Lily Bird Samanda
Steve Newburn Monster Puppeteer, Prosthetic Designer
Nicolas Gosselin Set Designer
Karim Babin Caterer
Mike Taylor Beau’s Son
James Cvetkovski Boy Beau
Julie Breton Casting
Melissa Fafard Makeup Artist
Lucian Johnston Editor
Armen Nahapetian Teen Beau