» Main Cast
| Al | Christian Madsen |
| Andrew Prior | Tony Goldwyn |
| Beatrice 'Tris' Prior | Shailene Woodley |
| Caleb Prior | Ansel Elgort |
| Christina | Zoe Kravitz |
| Eric | Jai Courtney |
| Jeanine Matthews | Kate Winslet |
| Marcus Eaton | Ray Stevenson |
| Max | Mekhi Phifer |
| Molly Atwood | Amy Newbold |
| Natalie Prior | Ashley Judd |
| Peter | Miles Teller |
| Tobias 'Four' Eaton | Theo James |
| Tori | Maggie Q |
| Will | Ben Lloyd-Hughes |