Taissa Farmiga

Sister Irene

Jonas Bloquet

Maurice Theriault

Storm Reid

Sister Debra

Anna Popplewell

Kate

Bonnie Aarons

The Demon Nun / Valak

Katelyn Rose Downey

Sophie

Suzanne Bertish

Madame Laurent

Léontine d'Oncieu

Simone

Anouk Darwin Homewood

Céleste

Peter Hudson

Father Ridley