Dakota Johnson as Susie

Tilda Swinton as Madame Blanc / Dr. Klemperer / Helena Markos

Mia Goth as Sara

Angela Winkler as Miss Tanner

Ingrid Caven as Miss Vendegast

Chloë Grace Moretz as Patricia

Elena Fokina as Olga

Sylvie Testud as Miss Griffith

Renée Soutendijk as Miss Huller

Christine Leboutte as Miss Balfour

Małgorzata Bela as Susie's Mother / Death

Fabrizia Sacchi as Pavla

Jessica Harper as Anke

Jessica Batut as Miss Mandel

Alek Wek as Miss Millius

Vincenza Modica as Miss Marks

Vanda Capriolo as Alberta

Brigitte Cuvelier as Miss Kaplitt

Gala Moody as Caroline

Anne-Lise Brevers as Sonia

Sara Sguotti as Doll

Halla Thordardottir as Mascia

Olivia Ancona as Marketa

Marjolaine Uscotti as Miss Daniels

Sharon Campbell as Miss Martincin

Elfriede Hock as Miss Mauceri

Iaia Ferri as Judith

Clémentine Houdart as Miss Boutaher

Charo Calvo as Miss Killen

Stephanie McMann as Siobhan

Majon van der Schot as Janine

Maria Bregianni as Sadie

Josepha Madoki as Liza Jane

Navala Chaudhari as Marianne

Karina El Amrani as Hermione

Doris Hick as Frau Sesame

Mikael Olsson as Agent Glockner

Fred Kelemen as Agent Albrecht

Greta Bohacek as Young Susie

Joel-Dennis Bienstock as Mennonite Priest

Toby Ashraf as Student at Backyard (uncredited)