Bill Skarsgård character Pennywise
Jessica Chastain character Beverly Marsh
Bill Hader character Richie Tozier
James McAvoy character Bill Denbrough
Isaiah Mustafa character Mike Hanlon
Jay Ryan character Ben Hanscom
James Ransone character Eddie Kaspbrak
Andy Bean character Stanley Uris
Jaeden Martell character Young Bill Denbrough
Wyatt Oleff character Young Stanley Uris
Jack Dylan Grazer character Young Eddie Kaspbrak
Finn Wolfhard character Young Richie Tozier
Sophia Lillis character Young Beverly Marsh
Chosen Jacobs character Young Mike Hanlon
Jeremy Ray Taylor character Young Ben Hanscom
Teach Grant character Henry Bowers
Nicholas Hamilton character Young Henry Bowers
Javier Botet character Hobo / The Witch
Xavier Dolan character Adrian Mellon
Taylor Frey character Don Hagarty
Molly Atkinson character Myra / Sonia Kaspbrak
Joan Gregson character Mrs. Kersh
Stephen Bogaert character Alvin Marsh
Luke Roessler character Dean
Stephen King character Shopkeeper
Peter Bogdanovich character Peter
Will Beinbrink character Tom
Jess Weixler character Audra Phillips
Martha Girvin character Patty
Ryan Kiera Armstrong character Victoria Fuller
Jackson Robert Scott character Georgie Denbrough
Jake Weary character Webby
Katie Lunman character Chris Unwin
Kelly Van der Burg character Victoria's Mom
Jason Fuchs character Richie's Manager
Joe Bostick character Mr. Keene
Megan Charpentier character Young Gretta
Juno Rinaldi character Gretta
Neil Crone character Chief Borton
Ry Prior character Connor
Owen Teague character Dead Hocksstetter
Jake Sim character Belch Huggins
Logan Thompson character Victor Criss
Connor Smith character Carny
Amanda Zhou character Waitress
Rob Ramsay character Meaner Nurse
John Connon character John Koontz (Juniper Hill Security)
Doug MacLeod character Head Honcho
Brandon Crane character Big Guy
Erik Junnola character Scuzzah
Josh Madryga character Scuzzah
Peter George Commanda character Shokopiwah Shaman
Kiley May character Shokopiwah Woman
Lisa Cromarty character Shokopiwah Woman
Kevin Allan Hess character Shokopiwah Man
Stephen R. Hart character Shokopiwah Man
Rocky L. Burnham Jr. character Shokopiwah Man
Billy Merasty character Shokopiwah Man
Sladen Peltier character Shokopiwah Young Boy
Ari Cohen character Stanley's Dad
Alex Bird character Theatre P.A.
Brody Bover character Shouting Kid
Edie Inksetter character Shouting Kid's Mom
Martin Julien character Janitor
Sonia Maria Chirila character Fishtank Girl
Colin Mcleod character Bully
Declan Prior character Bully
Marko Vujicic character Bully
Eric Woolfe character Nurse
Kate Corbett character Dean's Mom
Shawn Storer character Dean's Dad
Janet Porter character Richie's Mother
Scott Edgecombe character Customer
Anthony Ulc character The Butcher
J. Bogdan character Swearing Patient
Louise Stratten character Audra's Assistant
Laura Thorne character Production Assistant
Thomas Duhig character Assistant Director
Carla Guerrier character Police Officer
Liam MacDonald character Dean's Friend
Chris D'Silva character Dean's Friend
Tristan Levi Cox character 4-Year-Old Young Mike
Torian Matthew Cox character 4-Year-Old Young Mike
Lola Del Re Hudson character Betty Ripsom's Legs
Thiago Dos Santos character Twitchy Man
Divan Meyer character Audience Member (uncredited)
