Finn Wolfhard Young Richie Tozier
Bill Skarsgård Pennywise
Sophia Lillis Young Beverly Marsh
James McAvoy Bill Denbrough
Jack Dylan Grazer Young Eddie Kaspbrak
Jessica Chastain Beverly Marsh
Kiley May Shokopiwah Woman
Xavier Dolan Adrian Mellon
Bill Hader Richie Tozier
Jaeden Martell Young Bill Denbrough
Megan Charpentier Young Gretta
Kris Fenske Sound Effects Editor
Stephen King Novel, Shopkeeper
Jake Weary Webby
Luke Roessler Dean
James Ransone Eddie Kaspbrak
Stephen Bogaert Alvin Marsh
Edward A. Queffelec Stunts
Wyatt Oleff Young Stanley Uris
Owen Teague Dead Hockstetter
Ryan Kiera Armstrong Victoria Fuller
Sonia Maria Chirila Fishtank Girl
Andy Muschietti Director, Pharmacy Customer (uncredited)
Jeremy Ray Taylor Young Ben Hanscom
Shane Vieau Set Decoration
Stephen R. Hart Shokopiwah Man
Doug MacLeod Head Honcho
Nancy Nugent Title Supervising Sound Editor
Coco Kleppinger Casting Associate
Sondra Treilhard Key Hair Stylist
Peter Bogdanovich Peter
Jeremy Gillespie Graphic Designer
Michael Lerman First Assistant Director
Jackson Robert Scott Dead Georgie
Rich Delia Casting
Teach Grant Henry Bowers
Juno Rinaldi Gretta
Isaiah Mustafa Mike Hanlon
Michael Carella "B" Camera Operator
Jess Weixler Audra Phillips
Roy Lee Producer
Ari Cohen Stanley's Dad
Joan Gregson Mrs. Kersh
Will Beinbrink Tom
Christine Cleary Stunts
Rob Ramsay Meaner Nurse
Benjamin Wallfisch Original Music Composer
Bruce Tanis Sound Effects Editor
Gary Dauberman Screenplay, Executive Producer
Angelo Colavecchia "A" Camera Operator
Michelle Pazer ADR Editor, Dialogue Editor
Kelly Van der Burg Victoria's Mom
Thomas J. O'Connell ADR Mixer
Matt Birman Stunts
Chosen Jacobs Young Mike Hanlon
Javier Botet Hobo / The Witch
Warren Appleby Special Effects Coordinator, In Memory Of
Dave Neustadter Executive Producer
Billy Merasty Shokopiwah Man
Jay Ryan Ben Hanscom
Thiago Dos Santos Twitchy Man
Eric Woolfe Nurse
Lisa Shamata Unit Publicist
Vincent Rother Stunts
Roberto Campanella Choreographer
Alec Gillis Makeup Designer
Jason Fuchs Co-Producer, Richie's Manager
John Stead Stunts
Barbara Muschietti Producer
Joe Bostick Mr. Keene
Derek Barnes Stunts
Andy Bean Stanley Uris