Taissa Farmiga as Sister Irene

Jonas Bloquet as Maurice Theriault

Storm Reid as Sister Debra

Anna Popplewell as Kate

Bonnie Aarons as The Demon Nun / Valak

Katelyn Rose Downey as Sophie

Suzanne Bertish as Madame Laurent

Léontine d'Oncieu as Simone

Anouk Darwin Homewood as Céleste

Peter Hudson as Father Ridley

Tamar Baruch as Sister Amara

Natalia Safran as Sister Chloe

Maxime Elias-Menet as Jacques

Pascal Aubert as Father Noiret

Alexandra Gentil as Sister Astrid

Florence Mestais as Double Demon Nun

Margaux Borel as Double Demon Nun

Viviana Moin as Sister Maria

Renata Palminiello as Sister Pia

Fulvia Patrizia Olivieri as Abbess

Camille Amiel as Julie

Margot Morris as Aurélie

Gaël Raës as Cedric the Altar Boy

Sarah Pachoud as Emily

Lieve Carchon as Sister Concetta

David Horovitch as Cardinal Conroy

Paul Spera as Deacon Scott

Kate Colebrook as Irene's Mother / St. Lucy

Margot Bernazzi as Young Irene

Grégory Di Meglio as Hotel Clerk

Delcho Koprivshki as Ethan Rome

Philippe Josserand as Doctor

Aaron-Jon North as Demon Goat

Andrew Morgado as Demonic Voice (voice)

Patrick Wilson as Ed Warren

Vera Farmiga as Lorraine Warren