Taissa Farmiga as Sister Irene

Demián Bichir as Father Burke

Bonnie Aarons as The Nun / Valak

Jonas Bloquet as Maurice Theriault

Ingrid Bisu as Sister Oana

Patrick Wilson as Ed Warren

Vera Farmiga as Lorraine Warren

Lili Taylor as Carolyn Perron

Charlotte Hope as Sister Victoria

Sandra Teles as Sister Ruth

Maria Obretin as Sister Abigail

August Maturo as Daniel

Jack Falk as Daniel

Lynnette Gaza as Mother Superior

Ani Sava as Sister Jessica

Michael Smiley as Father Pasquale

Gabrielle Downey as The Abbess

David Horovitch as Cardinal Conroy

Tudor Munteanu as Grigore

Lili Bordán as Waitress Marta

Scarlett Hicks as Scarlett

Izzie Coffey as Student

Jared Morgan as Marquis

Laur Dragan as Villager

Eugeniu Cozma as Villager

Manuela Ciucur as Sister Christine

Beatrice Péter as Praying Nun

Ana Udroiu as Praying Nun

Andreea Sovan as Praying Nun

Dana Voicu as Praying Nun

Andreea Moldovianu as Praying Nun

Beatrice Rubica as Praying Nun

Claudia Susanu as Praying Nun

Boiangiu Alma as Demon Nun

Gabriela Irina Dinca as Demonic Nun

Dee Bradley Baker as Demonic Voice

Debra Wilson as Demonic Voice

Mark Steger as Duke

Lidiya Korotko as Barmaid

Emma Appleton as Elena (uncredited)

Jonny Coyne as Gregoro

Natalie Creek as 1950's Catholic School Girl (uncredited)

Flynn Hayward as Sister Samantha (uncredited)

Daniel Mandehr as Farmer Jozef

Samson Marraccino as Timothy (uncredited)

Jamie Muscato as Father Patino (uncredited)

Lourdes Nadres as Nun (uncredited)

Simon Rhee as Holy Man 1 (uncredited)

Sandra Rosko as Captured Nun (uncredited)

HayRae Rummel as Catholic School Girl (uncredited)

Claudio Lee Smith as Demon (uncredited)