 | Margaret Qualley als Sister Cathleen |
 | Melissa Leo als Reverend Mother |
 | Julianne Nicholson als Nora Harris |
 | Dianna Agron als Sister Mary Grace |
 | Lisa Stewart als Sister Genevieve |
 | Morgan Saylor als Sister Evelyn |
 | Liana Liberato als Sister Emily |
 | Rebecca Dayan als Sister Emanuel |
 | Eline Powell als Sister Candace |
 | Chelsea Lopez als Sister Charlotte |
 | Maddie Hasson als Sister Sissy |
 | Denis O'Hare als Archbishop |
 | Chris Zylka als Chuck Harris |
 | Alyssa Brindley als Sister Kate |
| Hannah Renèe Jackson als Sister Anne |
 | Marco St. John als Father Luca |
| Eliza Stella Mason als Cathleen, 7 Years Old |
| Bill Shick als Local Priest |
 | Danny Vinson als Rob, Church Usher |
| Angela Fox als Sister Gloria |
 | Neva Howell als Sister Eleanor |
| Sasha Mason als Cathleen, 12 Years Old |
 | Peggy Walton-Walker als Nun Teacher |
 | Ashley Bell als Sister Margaret |
| Rosemary Brown als Miss Williams |
| Gabe Beutel-Gunn als Nora's Boyfriend |
 | Marshall Chapman als Sister Louisa |
 | Lacy Hartselle als Sister Theresa (uncredited) |
| Kamryn Boyd als Blessed Sorrows Student (uncredited) |
| Adele Marie Pomerenke als Cathleen's Sister (uncredited) |
| Darla Pelton-Perez als Parent (uncredited) |
| Cecilia Wyle als Professed Nun (uncredited) |
 | Joseph Wilson als Churchgoer (uncredited) |
| Anna Swiney als Blessed Sorrow's Student (uncredited) |
| Sydney Hoover als Blessed Sorrows Student (uncredited) |
| Kalista Dwyer als Cathleen's Sister (uncredited) |
| Julia Leigh als Blessed Sorrows Student (uncredited) |
| Laurie Pallotta als Professed Nun (uncredited) |
| Kaitlyn Williams als Cathleen's Sister (uncredited) |
| Melissa Nyenhuis als Wedding attendee (uncredited) |
| Rachel Mae Moore als Cathleen's Sister (uncredited) |
| Jeromy Nichols als Churchgoer (uncredited) |
| Abram Knott als Alter Boy (uncredited) |
| Gabriela Contaldo als Nun (uncredited) |
| Nettie Kraft als Friend of Noras' (uncredited) |
| Juliana Dougherty als Blessed Sorrows Student (uncredited) |
| Sydney Harris als Blessed Sorrows Student (uncredited) |
| Jordan Price als Blessed Sorrows Student (uncredited) |
| Kirk H. Andersen als Churchgoer (uncredited) |
| Ashley Hargrove als Cathleen Sister Nun (uncredited) |
| Monty Powers als Parent of Nun (uncredited) |
| Jeffrey Wilkerson als Church Goer (uncredited) |
| Courtney Cook als 2nd Year Novice Nun 1 (uncredited) |
| Kerry Graul als Churchgoer (uncredited) |
| Jenny Revord als Professed Nun (uncredited) |
| Bryan Fields als Church Goer (uncredited) |
| David Alan Spodeck als Sister Evelyn's father (uncredited) |
| Kurstan Buck als Student (uncredited) |
| Tallie Fausnaught als Cathleen's Sister (uncredited) |
| Robert Happy Allen als Church Dad (uncredited) |
| Shelton Tison als Altar Boy (uncredited) |
| Carter Stewart als Cathleen's Son (uncredited) |
| Kadence Riggs als Churchgoer (uncredited) |
| Valeigh Rhiannon Alford als Catholic School Girl (uncredited) |
| Kylie Knott als Blessed Sorrows Student (uncredited) |
| Abby Harkins als Professed Nun (uncredited) |
| Jasmin Maya Larsen als Blessed Sorrows Student (uncredited) |
| Stephanie Heuer als Sister Evelyn's Mom (uncredited) |
| Debbie Swierk als Blessed Sorrows Nun (uncredited) |
| Tonya Webb als Parent / Churchgoer (uncredited) |
| Shelby Johnson als 2nd Year Novice 2 (uncredited) |
| Emma Barberi als Blessed Sorrows Student (uncredited) |
| Shayna-Raye Funderburk als Cathleen's Sister (uncredited) |
| Emma Grace Peper als Blessed Sorrows Student (uncredited) |
| Victoria Bradford als Novice Nun (uncredited) |
| Phillip Trammel als Novitiate Parent (uncredited) |
| Kerry Graul als Church Attendee |
| Margaret Betts | Director |
| Margaret Betts | Writer |
| Jessica Betts | Executive Producer |
| Carole Peterman | Producer |
| Sig De Miguel | Casting |
| Stephen Vincent | Casting |
| Gia Grosso | Set Decoration |
| Vanessa Porter | Costume Design |
| Kat Westergaard | Director of Photography |
| John Sanders | Production Design |
| Susan E. Morse | Editor |
| Celine Rattray | Producer |
| Trudie Styler | Producer |
| Roland Betts | Executive Producer |
| Margaret Betts | Executive Producer |
| Christopher Star | Original Music Composer |
| Tyler Bradley Walker | Music Supervisor |
| Kelly R. Tenney | Unit Production Manager |
| Jenny Halper | Associate Producer |
| Paul A. Levin | Associate Producer |
| Justin Mickelson | Second Second Assistant Director |
| Merissa Ide Costanza | Script Supervisor |
| Dee Butler | Location Manager |
| Mark Sudbury | Assistant Location Manager |
| Devyn Betancourt | Location Production Assistant |
| Kyle Bryant | Location Production Assistant |
| Lauren Carnes | Assistant Production Coordinator |
| Felicia Chunn | Production Secretary |
| Natalie Ashker | Production Office Assistant |
| Brandon Heaven | Production Office Assistant |
| Les Gibson | Production Runner |
| Andrew Roxby | Production Runner |
| Benjamin Prosser | Production Runner |
| Sandra Kraft | Production Accountant |
| Rachel Betlinski | Payroll Accountant |
| Adam Davenport | Actor's Assistant |
| Kim Petrosky | Casting Director |
| Brent Montgomery | Casting Associate |
| Tina Kerr | Extras Casting |
| David Mellow | "A" Camera Operator |
| Scott Johnson | First Assistant "A" Camera |
| Tracy Facelli | Second Assistant "A" Camera |
| Armanda Costanza | "B" Camera Operator |
| Erin Naifeh | First Assistant "B" Camera |
| Tiffany Murray | Second Assistant "B" Camera |
| Billy Green | Steadicam Operator |
| Tony Y. Reyes | Steadicam Operator |
| Mark Levine | Still Photographer |
| Skyler Proctor | Digital Imaging Technician |
| Scotty Wright | Loader |
| Shawn Stone | Key Grip |
| Danny Brazen | Best Boy Grip |
| Maxx Shores | Dolly Grip |
| Mac Cushing | Grip |
| Jake Alvarez | Grip |
| Joe Crowley | Grip |
| Justin Sulham | Grip |
| Brent Bailey | Gaffer |
| Will Scott | Best Boy Electric |
| Michelob Fedusenko | Electrician |
| Alexandrew Mironescu | Electrician |
| Andy Allmendinger | Electrician |
| Alex Gordon | Electrician |
| Derek Cameron | Electrician |
| Zac Blackwell | Electrician |
| Steve Grider | Sound Mixer |
| Dave Gullberg | Boom Operator |
| Nick Price | Utility Sound |
| Shanna Shrum | Art Department Coordinator |
| Willie Blanchard | Set Designer |
| Michael Williamson | Property Master |
| Brit Doyle | Assistant Property Master |
| Duane Williamson | Leadman |
| James Wallace | Set Dresser |
| Andrew Seibert | Set Dresser |
| Andy Boyles | Set Dresser |
| Jonathan Fraser | Set Dresser |
| Megan Bowsaw | Set Dresser |
| Eric Earl Aycock | On Set Dresser |
| Caryn Frankenfield | Costume Supervisor |
| Amanda Steeley | Key Costumer |
| Zoey Zimbicki | Costumer |
| Jill Ledbetter | Costumer |
| Hannah Schmidt | Costumer |
| Todd Cantrell | Costumer |
| Terrah Trimble | Costumer |
| Mia Flanagan | Costume Coordinator |
| Michealle Vanderpool | Hair Department Head |
| Beka Wilson | Key Hair Stylist |
| Holly Chapman | Additional Hairstylist |
| Steven Young | Additional Hairstylist |
| Linda Briggs | Additional Hairstylist |
| Maggie Caudill | Wigmaker |
| Sandy Jo Johnston | Makeup Department Head |
| Heidi Evora Santiago | Key Makeup Artist |
| David Hale | Construction Coordinator |
| Douglas Butcher | Propmaker |
| Vincent Butera, Jr. | Propmaker |
| Gary Rabasca | Propmaker |
| John Rabasca | Propmaker |
| Jonathan Simms | Propmaker |
| Chris Walsh | Chef |
| Chris Blalock | Assistant Chef |
| Justin Walker | Assistant Chef |
| Micah Steele | Craft Service |
| Lorelai Hibbard | Stand In |
| Alexandra Sedlak | Stand In |
| Sabrina Davenport | Stand In |
| Brandon Moses | Set Production Assistant |
| Kyler Wilson | Set Production Assistant |
| Mike Bagford | Set Production Assistant |
| Megan Weiss | Set Production Assistant |
| Lucius Patenaude | Set Production Assistant |
| Kevin Hooper | Set Production Assistant |
| Stephanie Adams | Set Production Assistant |
| David Tanksley | Unit Manager |
| Mike Russell | Transportation Captain |
| Ann Gray | Post Production Supervisor |
| Tricia Holmes | First Assistant Editor |
| Briana Kay Stodden | Post Production Assistant |
| Ruy García | Supervising Sound Editor |
| Martin Czembor | Sound Re-Recording Mixer |
| Luciano Vignola | Dialogue Editor |
| Luciano Vignola | ADR Editor |
| Dave Flynch | Foley Editor |
| Allen Lau | Assistant Sound Editor |
| Leslie Bloome | Foley Artist |
| Joanna Fang | Foley Artist |
| Ryan Collison | Foley Mixer |
| Nick Seaman | Foley Recordist |
| Christopher Kenneally | Digital Intermediate Producer |
| Patrick DeVine | Title Designer |
| Charles Leighton | Color Assistant |
| David McElfresh | Visual Effects Producer |
| Michael Fernandes | Visual Effects Producer |
| Victoria Penzes | Compositing Supervisor |
| Jesse Speer | Compositor |
| Min Hwa Jung | Compositor |
| John Seppala | Compositor |
| Matthew Perry | Compositor |
| Sally Swisher | Music Editor |
| Joe May | First Assistant Director |
| Arvo Pärt | Additional Soundtrack |
