 | Jay Baruchel als Hiccup Horrendous Haddock III (voice) |
 | Gerard Butler als Stoick the Vast (voice) |
 | Craig Ferguson als Gobber the Belch (voice) |
 | America Ferrera als Astrid Hofferson (voice) |
 | Jonah Hill als Snotlout Jorgenson (voice) |
 | Christopher Mintz-Plasse als Fishlegs (voice) |
 | T.J. Miller als Tuffnut (voice) |
 | Kristen Wiig als Ruffnut (voice) |
 | Bridget Hoffman als Female Viking (voice) |
 | Peter Lavin als Misc Viking 1 (voice) |
 | Neil Dickson als Misc Viking 2 (voice) |
 | Ian Ruskin als Misc Viking 3 (voice) |
 | Julian Barnes als Misc Viking 4 (voice) |
| Tom Owens | Director |
| Simon Otto | Storyboard |
| Jonathan Null | Sound Editor |
| Dean DeBlois | Executive Producer |
| Kathy Altieri | Production Design |
| Jennifer Dahlman | Associate Producer |
| John K. Carr | Editor |
| Bonnie Arnold | Executive Producer |
| Adam F. Goldberg | Screenplay |
| Jin Liou | Digital Effects Supervisor |
| Kate Spencer | Producer |
| Al Nelson | Sound Designer |
| Craig Ring | Visual Effects Supervisor |
| John Powell | Original Music Composer |
| Dominic Lewis | Original Music Composer |
| Cressida Cowell | Book |
