Corin Hardy Director Demián Bichir Father Burke Actor Taissa Farmiga Sister Irene Actor Jonas Bloquet Frenchie Actor Bonnie Aarons The Nun Actor Ingrid Bisu Sister Oana Actor Charlotte Hope Sister Victoria Actor Sandra Teles Sister Ruth Actor Maria Obretin Sister Abigail Actor August Maturo Daniel Actor Jack Falk Daniel Actor Lynnette Gaza Mother Superior Actor Ani Sava Sister Jessica Actor Michael Smiley Bishop Pasquale Actor Gabrielle Downey The Abbess Actor David Horovitch Cardinal Conroy Actor Tudor Munteanu Grigore Actor Gary Dauberman Screenwriter, Executive Producer James Wan Producer Peter Safran Producer Richard Brener Executive Producer Walter Hamada Executive Producer Dave Neustadter Executive Producer Michael Clear Executive Producer Todd Williams Executive Producer Maxime Alexandre Cinematographer Michel Aller Film Editing Ken Blackwell Film Editing Abel Korzeniowski Original Music Jennifer Spence Production Design Sharon Gilham Costume Design Rich Delia Casting