Taissa Farmiga (Sister Irene), Anna Popplewell (Kate), Jonas Bloquet (Maurice Theriault), Storm Reid (Sister Debra), Katelyn Rose Downey (Sophie), Léontine d'Oncieu (Simone), Anouk Darwin Homewood (Céleste) more..., Sarah Pachoud (Emily), Suzanne Bertish (Madame Laurent), Bonnie Aarons (The Demon Nun / Valak), Peter Hudson (Father Ridley), Tamar Baruch (Sister Amara), Natalia Safran (Sister Chloe), Maxime Elias-Menet (Jacques), Pascal Aubert (Father Noiret), 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), 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)), Patrick Wilson (Ed Warren), Vera Farmiga (Lorraine Warren)

James Wan (Producer), Peter Safran (Producer), Richard Brener (Executive Producer), Dave Neustadter (Executive Producer), Akela Cooper (Screenplay), Tristan Nyby (Director of Photography), Michael Clear (Executive Producer) more..., Lainey Lipson (Casting Assistant), Jean-Christophe Magnaud (Special Effects Supervisor), Laurent Usse (Grip), Stéphane Cressend (Production Design), Philip Thomas (Assistant Location Manager), Véronique Boslé (Hairstylist), Ian B. Goldberg (Screenplay), Alexis McKenzie Main (Supervising Art Director), Rose Wicksteed (Casting), Gary Dauberman (Executive Producer), Dominique Moisan (Art Direction), Arnaud Kaiser (Production Manager), Arnaud Kaiser (Unit Production Manager), Sarah Boutin (Second Unit First Assistant Director), Anne Fremiot (Casting), Hugues Espinasse (Second Unit Director of Photography), Emmanuel Delis (Set Decoration), Richard Naing (Screenplay), Xio Farias (Production Secretary), Erwan Kerzanet (Sound Mixer), Rémi Quilichini (Steadicam Operator), Agnès Beziers (Costume Design), Eric Larsen (Dolly Grip), Laurent Schepman (Best Boy Grip), Sébastien Fouassier (Stunt Coordinator), Suzel Jouguet (Key Makeup Artist), Mathieu Poudevigne (Electrician), Guilhem Malgoire (Second Unit Director), Nicolas Amédéo (Rigging Gaffer), Matthieu Lornat (Camera Operator), Matthieu Lornat (Steadicam Operator), Michel Strasser (Key Grip), Yannick Heuveline (Carpenter) and others.