 | Daniel Radcliffe als Ignatius Perrish |
 | Juno Temple als Merrin Williams |
 | Max Minghella als Lee Tourneau |
 | Joe Anderson als Terry Parrish |
 | Kelli Garner als Glenna |
 | Heather Graham als Veronica |
 | David Morse als Dale Williams |
 | James Remar als Derrick Perrish |
 | Kathleen Quinlan als Lydia Perrish |
 | Sabrina Carpenter als Young Merrin |
 | Laine MacNeil als Young Glenna |
 | Dylan Schmid als Lee at 13 |
 | Kendra Anderson als Nurse Delilah |
 | Michael Adamthwaite als Eric Hannity |
 | Nels Lennarson als Wallace Sturtz |
 | Don Thompson als Al O'Hara |
 | Jay Brazeau als Father Mould |
 | Alex Zahara als Dr. Renald |
 | Christine Willes als Receptionist |
 | Meredith McGeachie als Mary, young mother |
 | Sarah Boey als Little Girl |
 | Panou als Golf Pro |
 | Reese Alexander als TV Reporter |
 | Desiree Zurowski als Radio Reporter |
 | Marilyn Norry als Protester |
 | Nancy Sivak als Mrs. Tourneau |
 | Cameron McDonald als E.R. Doctor |
 | John Stewart als Diner Manager |
 | Dean Wray als Stan, the Barfly |
| Graem Beddoes als Unemployed Barfly |
 | Eric Pollins als Exhibitionist Barfly |
| Pesi Daruwalla als Antique Store Owner |
| Ryan Clare als Terry's Bass Player |
| Richard Mitchell als Terry's Jazz Quintet |
 | Kieron Rhys Lillo als Terry's Jazz Quintet |
| Tyson Sully als Terry's Jazz Quintet |
| Mark Muskiw als Terry's Jazz Quintet |
 | Mitchell Kummen als Ig Perrish at 13 |
| Jared Ager-Foster als Terry Perrish at 15 |
 | Erik McNamee als Eric Hannity at 15 |
| Alexandre Aja | Director |
| Joe Hill | Writer |
| Keith Bunin | Screenplay |
| Jennifer L. Smith | Casting |
| Riza Aziz | Producer |
| Joey McFarland | Producer |
| Alexandre Aja | Producer |
| Tricia Wood | Casting |
| Baxter | Editor |
| Deborah Aquila | Casting |
| Cathy Schulman | Producer |
| Allan Cameron | Production Design |
| Sandra Fox | Foley |
| Michael O'Farrell | Supervising Sound Editor |
| Tyler Bishop Harron | Assistant Art Director |
| Andy Malcolm | Foley |
| Gary Viola | Camera Operator |
| Doane Gregory | Still Photographer |
| Patrick Duchesne | Digital Intermediate |
| Fay von Schroeder | Makeup Artist |
| Jak Osmond | Special Effects Coordinator |
| Peter Zuccarini | Underwater Camera |
| Andrew Walton | First Assistant Editor |
| Delphine Measroch | Music Editor |
| Carol Beadle | Costume Design |
| Paul Capuano | Dolby Consultant |
| Goro Koyama | Foley |
| Hans Bjerno | Helicopter Camera |
| Lee Anne Muldoon | Unit Publicist |
| Rob Bertola | Sound Effects Editor |
| Derek Wentworth | Visual Effects Supervisor |
| Peter Wilke | Steadicam Operator |
| Shane Vieau | Set Decoration |
| Thierry Tanguy | Location Manager |
| Chris Morley | Visual Effects Supervisor |
| Robert Doyle | First Assistant Editor |
| Jessica Clothier | Script Supervisor |
| Maiko 'Mo' Gomyo | Makeup Effects |
| Mark Gingras | Sound Effects Editor |
| Mike Woroniuk | Sound Re-Recording Mixer |
| William Groebe | Animation Supervisor |
| Prem Marimuthu | Gaffer |
| John Beatty | Construction Coordinator |
| Adam O'Brien-Locke | Visual Effects Producer |
| Carie Wallis | Art Department Coordinator |
| Marco Foglia | Animation Supervisor |
| Sean Oxenbury | Rigging Gaffer |
| Luis Freitas | First Assistant Editor |
| Thom Kyle | First Assistant Editor |
| Jeremy Stanbridge | Art Direction |
| Rita Ciccozzi | Makeup Department Head |
| Orest Sushko | Sound Re-Recording Mixer |
| Frank Biasi | Digital Intermediate |
| Chuck Duke | Animation |
| Howard R. Campbell | Lighting Artist |
| Frederick Elmes | Director of Photography |
| Mark N. Tompkins | Scenic Artist |
| Emilie Boucek | Dialogue Editor |
| Robin Coudert | Original Music Composer |
| David Dowling | Property Master |
| Janene Carleton | Stunt Double |
| Krista Bell | Stunt Double |
| Joe Hill | Original Story |
