Jason Clarke as Louis Creed

Amy Seimetz as Rachel Creed

John Lithgow as Jud Crandall

Jeté Laurence as Ellie Creed

Hugo Lavoie as Gage Creed

Lucas Lavoie as Gage Creed

Obssa Ahmed as Victor Pascow

Sonia Maria Chirila as Young Rachel

Alyssa Brooke Levine as Zelda Goldman

Maria Herrera as Marcella

Jacob Lemieux as Mouse Face

Maverick Fortin as Dog Face

Lou Ferrando as Rabbit Face

Najya Muipatayi as Cat Face

Emma Hill as Horse Face

Frank Schorpion as Rachel's Father

Linda E. Smith as Rachel's Mother

Naomi Frenette as Upset Student

Suzi Stingl as Norma

Kelly Lee as Nurse Kelly

Nina Lauren as Nurse Nina

Alison O'Donnell as Party Guest #1

Raphaël Laporte as Party Guest #2

Simon Pelletier-Gilbert as Party Guest #3

Ambre Dioh-Dikongué as Halloween Kid #4 (uncredited)

Constance St-Denis-Veilleux as Halloween Kid #2 (uncredited)

Bailey Thain as Kid #1 (uncredited)

Ines Feghouli Bozon as Halloween Kid #1 (uncredited)