Taissa Farmiga

Sister Irene

Jonas Bloquet

Maurice Theriault

Storm Reid

Debra

Anna Popplewell

Kate

Bonnie Aarons

The Nun / Valak

Katelyn Rose Downey

Sophie

Suzanne Bertish

Madame Laurent

Léontine d'Oncieu

Simone

Anouk Darwin Homewood

Céleste

Peter Hudson

Father Ridley

Tamar Baruch

Sister Amara

Natalia Safran

Sister Chloe

Maxime Elias-Menet

Jacques

Pascal Aubert

Father Noiret

Vera Farmiga

Lorraine Warren

Patrick Wilson

Ed Warren

Alexandra Gentil

Sister Astrid

Florence Mestais

Double Demon Nun

Margaux Borel

Double Demon Nun

Viviana Moin

Sister Maria

Renata Palminiello

Sister Pia

Fulvia Patrizia Olivieri

Abbess

Camille Amiel

Julie

Margot Morris

Aurélie

Gaël Raës

Cedric the Altar Boy

Sarah Pachoud

Emily

Lieve Carchon

Sister Concetta

David Horovitch

Cardinal Conroy

Paul Spera

Deacon Scott

Kate Colebrook

Irene's Mother / St. Lucy

Margot Bernazzi

Young Irene

Grégory Di Meglio

Hotel Clerk

Delcho Koprivshki

Ethan Rome

Philippe Josserand

Doctor

Aaron-Jon North

Demon Goat

Andrew Morgado

Demonic Voice (voice)