Pray for forgiveness.
A priest with a dark past and a novice nearing her final vows are sent by the Vatican to Romania to investigate a nun's death and face a demonic force.
Taissa Farmiga Sister Irene
Demián Bichir Father Burke
Bonnie Aarons The Nun / Valak
Jonas Bloquet Maurice Theriault
Ingrid Bisu Sister Oana
Patrick Wilson Ed Warren
Vera Farmiga Lorraine Warren
Lili Taylor Carolyn Perron
Charlotte Hope Sister Victoria
Sandra Teles Sister Ruth
Maria Obretin Sister Abigail
August Maturo Daniel
Jack Falk Daniel
Lynnette Gaza Mother Superior
Ani Sava Sister Jessica
Michael Smiley Father Pasquale
Gabrielle Downey The Abbess
David Horovitch Cardinal Conroy
Tudor Munteanu Grigore
Lili Bordán Waitress Marta
Scarlett Hicks Scarlett
Izzie Coffey Student
Jared Morgan Marquis
Laur Dragan Villager
Eugeniu Cozma Villager
Manuela Ciucur Sister Christine
Beatrice Péter Praying Nun
Ana Udroiu Praying Nun
Andreea Sovan Praying Nun
Dana Voicu Praying Nun
Andreea Moldovianu Praying Nun
Beatrice Rubica Praying Nun
Claudia Susanu Praying Nun
Boiangiu Alma Demon Nun
Gabriela Irina Dinca Demonic Nun
Dee Bradley Baker Demonic Voice
Debra Wilson Demonic Voice
Mark Steger Duke
Lidiya Korotko Barmaid
Emma Appleton Elena (uncredited)
Jonny Coyne Gregoro
Natalie Creek 1950's Catholic School Girl (uncredited)
Flynn Hayward Sister Samantha (uncredited)
Daniel Mandehr Farmer Jozef
Samson Marraccino Timothy (uncredited)
Jamie Muscato Father Patino (uncredited)
Lourdes Nadres Nun (uncredited)
Simon Rhee Holy Man 1 (uncredited)
Sandra Rosko Captured Nun (uncredited)
HayRae Rummel Catholic School Girl (uncredited)
Claudio Lee Smith Demon (uncredited)
- Taissa FarmigaSister Irene
- Demián BichirFather Burke
- Bonnie AaronsThe Nun / Valak
- Jonas BloquetMaurice Theriault
- Ingrid BisuSister Oana
- Patrick WilsonEd Warren
- Vera FarmigaLorraine Warren
- Lili TaylorCarolyn Perron
- Charlotte HopeSister Victoria
- Sandra TelesSister Ruth
- Maria ObretinSister Abigail
- August MaturoDaniel
- Jack FalkDaniel
- Lynnette GazaMother Superior
- Ani SavaSister Jessica
- Michael SmileyFather Pasquale
- Gabrielle DowneyThe Abbess
- David HorovitchCardinal Conroy
- Tudor MunteanuGrigore
- Lili BordánWaitress Marta
- Scarlett HicksScarlett
- Izzie CoffeyStudent
- Jared MorganMarquis
- Laur DraganVillager
- Eugeniu CozmaVillager
- Manuela CiucurSister Christine
- Beatrice PéterPraying Nun
- Ana UdroiuPraying Nun
- Andreea SovanPraying Nun
- Dana VoicuPraying Nun
- Andreea MoldovianuPraying Nun
- Beatrice RubicaPraying Nun
- Claudia SusanuPraying Nun
- Boiangiu AlmaDemon Nun
- Gabriela Irina DincaDemonic Nun
- Dee Bradley BakerDemonic Voice
- Debra WilsonDemonic Voice
- Mark StegerDuke
- Lidiya KorotkoBarmaid
- Emma AppletonElena (uncredited)
- Jonny CoyneGregoro
- Natalie Creek1950's Catholic School Girl (uncredited)
- Flynn HaywardSister Samantha (uncredited)
- Daniel MandehrFarmer Jozef
- Samson MarraccinoTimothy (uncredited)
- Jamie MuscatoFather Patino (uncredited)
- Lourdes NadresNun (uncredited)
- Simon RheeHoly Man 1 (uncredited)
- Sandra RoskoCaptured Nun (uncredited)
- HayRae RummelCatholic School Girl (uncredited)
- Claudio Lee SmithDemon (uncredited)