Bill Skarsgård Pennywise
Finn Wolfhard Young Richie Tozier
James McAvoy Bill Denbrough
Jessica Chastain Beverly Marsh
Sophia Lillis Young Beverly Marsh
Xavier Dolan Adrian Mellon
Jackson Robert Scott Dead Georgie
Stephen King Novel, Shopkeeper
Bill Hader Richie Tozier
Ryan Kiera Armstrong Victoria Fuller
Jeremy Ray Taylor Young Ben Hanscom
Stephen Bogaert Alvin Marsh
Wyatt Oleff Young Stanley Uris
Andy Muschietti Director, Pharmacy Customer (uncredited)
Andy Bean Stanley Uris
Owen Teague Dead Hockstetter
James Ransone Eddie Kaspbrak
Isaiah Mustafa Mike Hanlon
Jake Weary Webby
Jess Weixler Audra Phillips
Peter Bogdanovich Peter - Director
Jay Ryan Ben Hanscom
Jaeden Martell Young Bill Denbrough
Gary Dauberman Screenplay, Executive Producer
Chosen Jacobs Young Mike Hanlon
Luke Roessler Dean
Jessie Pariseau Sound Effects Editor
Jason Fuchs Richie's Manager, Co-Producer, Screenplay
Joe Bostick Mr. Keene
Jack Dylan Grazer Young Eddie Kaspbrak
Joan Gregson Mrs. Kersh
Jason Gosbee Stunts
Billy Merasty Shokopiwah Man
Janet Porter Richie's Mom
Will Beinbrink Tom
Nicholas Hamilton Young Henry Bowers
Megan Charpentier Young Gretta
Matt Birman Stunts
John C. Stuver Dialogue Editor, ADR Editor
Ari Cohen Stanley's Dad
Checco Varese Director of Photography
Anthony Ulc The Butcher
Roy Lee Producer
Javier Botet Hobo / The Witch
Benjamin Wallfisch Original Music Composer
Teach Grant Henry Bowers
Brandon Crane Big Guy
Stephen R. Hart Shokopiwah Man
Rich Delia Casting
Edward A. Queffelec Stunts
Kiley May Shokopiwah Woman
James Binkley Stunts
Louise Stratten Audra's Assistant
Edie Inksetter Shouting Kid's Mom
Kelly Van der Burg Victoria's Mom
Jake Sim Belch Huggins
Amanda Zhou Waitress
Molly Atkinson Myra / Sonia Kaspbrak
Jamie Jones Stunt Coordinator
Nick Alachiotis Stunts
Stephanie Gorin Local Casting
Rob Ramsay Meaner Nurse
Kate Corbett Dean's Mom
Neil Crone Chief Borton
Daniel Lavigne Stunts
Brooke Lyndon-Stanford Visual Effects Supervisor
Martha Girvin Patty
Liam MacDonald Dean's Friend
Alec Gillis Makeup Designer
Regan Moore Stunts
Amy Szoke Stunts
Martin Julien Janitor