 | 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 Ingerman (voice) |
 | T.J. Miller als Tuffnut Thorston (voice) |
 | Kristen Wiig als Ruffnut Thorston (voice) |
 | David Tennant als Spitelout (voice) |
 | Ashley Jensen als Phlegma the Fierce (Voice) |
 | Robin Atkin Downes als Ack (voice) |
 | Philip McGrade als Starkard (voice) |
 | Kieron Elliott als Hoark the Haggard (voice) |
| Sheri Galloway | Assistant Editor |
| Nico Marlet | Character Designer |
| Dennie Thorpe | Foley Artist |
| Jana Vance | Foley Artist |
| John Powell | Original Music Composer |
| Leslee Feldman | Casting |
| Mark A. Hester | Associate Editor |
| Jim Passon | Color Timer |
| Bonnie Arnold | Producer |
| Maryann Brandon | Editor |
| Doug Davison | Co-Producer |
| Roy Lee | Co-Producer |
| William Davies | Screenplay |
| Darren T. Holmes | Editor |
| Randy Thom | Sound Designer |
| Randy Thom | Supervising Sound Editor |
| Randy Thom | Sound Re-Recording Mixer |
| Kevin Andrus | Animation |
| Tim Johnson | Executive Producer |
| Lorna Cook | Thanks |
| Jeremy Garelick | Thanks |
| Blake Snyder | In Memory Of |
| Catherine A. Jones | Production Supervisor |
| Peter Hastings | Thanks |
| Cressida Cowell | Book |
| Chris Sanders | Screenplay |
| Chris Sanders | Director |
| John K. Carr | Additional Editing |
| Dean DeBlois | Screenplay |
| Dean DeBlois | Director |
| Lynn Hobson | Additional Editing |
| Robert W. Hedland | Assistant Editor |
| Susan Fitzer | Associate Editor |
| Ronald G. Roumas | Sound Recordist |
| Tony Sereno | Sound Mix Technician |
| David Soren | Thanks |
| Kristine Belson | Executive Producer |
| Jonathan Null | Supervising Sound Editor |
| Gary Rizzo | Sound Re-Recording Mixer |
| Karen Smith | VFX Artist |
| Yoshioka Masahito | Visual Effects |
| Dave Kim | Production Coordinator |
| Travis Koller | Visual Development |
| John Allwine | VFX Artist |
| John Swanson | Production Supervisor |
| Nicolas Weis | Visual Development |
| Bart Coughlin | Creature Technical Director |
| Wilbert Plijnaar | Concept Artist |
| Lori Korngiebel | Production Manager |
| George Doering | Musician |
| Cameron Hood | Animation |
| Wee Brian | Animation |
| Lucia Modesto | Creature Technical Director |
| Stephan Franck | Storyboard |
| Ricardo F. Delgado | Character Designer |
| Olivier Staphylas | Animation |
| Zach Martin | Sound Mix Technician |
| Suzanne Buirgy | Associate Producer |
| Julien Bocabeille | Animation |
| Mark Deimel | Additional Editing |
| Ania Kamieniecki-O'Hare | Casting Assistant |
| Andrew Birch | Post-Production Manager |
| Adam Milo Smalley | Music Editor |
| April Lawrence | Production Supervisor |
| Nick Wollage | Scoring Mixer |
| Nick Wollage | Score Engineer |
| Christi Soper Hilt | Casting Associate |
| Colette D. Dahanne | Additional Sound Re-Recording Mixer |
| Jeremy Bowker | Assistant Sound Editor |
| Josh Gold | Sound Effects Editor |
| Sue Fox | Foley Editor |
| Jessica Drake | Dialect Coach |
| Al Nelson | Sound Designer |
| Kate Crossley | Post Production Supervisor |
| Tighe Sheldon | Sound Recordist |
| Leff Lefferts | Sound Design Assistant |
| Simon Otto | Animation |
| Devin Crane | Character Designer |
| Mick De Falco | Layout |
| Michael Cadwallader Jones | VFX Artist |
| James Baxter | Animation |
| Andy Bialk | Character Designer |
| J.C. Alvarez | Layout |
| Emil Mitev | Visual Development |
| Pat Sito | Animation Manager |
| Shane Prigmore | Character Designer |
| Joseph Izzo | Production Coordinator |
| Kristof Serrand | Supervising Animator |
| Kathy Zielinski | Animation |
| Morgan R. Kelly | Animation |
| Eric Lees | Animation |
| Laurent Caneiro | Animation |
| Bill Diaz | Animation |
| Michael McNeill | CG Supervisor |
| Kathy Altieri | Production Design |
| Takao Noguchi | Character Designer |
| Aaron Smith | CG Supervisor |
| Ronman Yiu Yan Ng | CG Supervisor |
| Kate Spencer | Production Manager |
| Michael A. Connolly | Co-Producer |
| Mike Beaulieu | Animation |
| Andrea McCarthy Paul | Production Accountant |
| Karen Foster | Co-Producer |
| Dane Stogner | Animation |
| Elizabeth C. Camp | Production Coordinator |
| Jessica Wells | Orchestrator |
| Melchior Zwyer | Visual Development |
| Michael Kiely | Animation |
| Fabio Lignini | Supervising Animator |
| Amanda Deering Jones | Script Coordinator |
| Jenne Guerra | Production Supervisor |
| Brent Hutchins | Production Supervisor |
| Hongseo Park | Creature Technical Director |
| Gil Zimmerman | Director of Photography |
| Mark Berrow | Musician |
| Mike Deasy | Musician |
| James Thatcher | Musician |
| Melanie Cordan | Animation |
| Rebecca Perez | Animation |
| Irene Parkins | Animation |
| Steve Mair | Musician |
| Peter Davies | Musician |
| Craig Ring | VFX Supervisor |
| Jennifer Dahlman | Production Manager |
| Bert Poole | CG Supervisor |
| Chris Gridley | ADR Editor |
| Tracey Dispensa | Production Supervisor |
| Peter Farson | Creature Technical Director |
| August Meredith | VFX Artist |
| Rachel Slansky | Production Coordinator |
| Rachel Bolt | Musician |
| Roger Linley | Musician |
| Ben Frahm | Thanks |
| Onny P. Carr | Lighting Artist |
| Onny P. Carr | VFX Artist |
| Larry Cutler | Creature Technical Director |
| Tien Truong | Visual Effects |
| Mark Williams | Animation |
| Nara Youn | Animation |
| Adam DesCombes | Editorial Production Assistant |
| Cristian Moras | Modeling |
| Gina Warr | Master Lighting Artist |
| Patrick Kelly | Software Engineer |
| Fredrik Nilsson | Animation |
| Cassidy Curtis | Supervising Animator |
| Denis Couchon | Animation |
| Anna Noakes | Musician |
| Andrew Crowley | Musician |
| Susan Hayden | CG Supervisor |
| Bart Feliciano | Systems Administrators & Support |
| Mike Stern | Animation |
| Jonathan Fletcher Moore | Lighting Artist |
| Zubin Wadia | VFX Artist |
| David Torres | Supervising Animator |
| Betty Tom | Production Accountant |
| Steven Hornby | Supervising Animator |
| Adam Dotson | Animation |
| Tomoyuki Harashima | Animation |
| Leif Jeffers | Animation |
| Ron Pucherelli | Animation |
| Christine Lojko Haslett | Assistant Editor |
| Alena Bejenarou | Creature Technical Director |
| Li-Lian Ku | Creature Technical Director |
| Vicki Hunter | Finance |
| Ariga Parseghian | Finance |
| Terri Anderson | Finance |
| Alexis Wanneroy | Animation |
| Oth Khotsimeuang | Lighting Artist |
| Hannah Sherman | Lighting Artist |
| Shawn Bohonos | Systems Administrators & Support |
| Dave Dinsmore | Systems Administrators & Support |
| Dj Downey | Systems Administrators & Support |
| Alireza Estakhrian | Systems Administrators & Support |
| Julio C. Talavera | Systems Administrators & Support |
| Kelly Matthews | Production Supervisor |
| Peter McCown | Production Coordinator |
| David Hail | Publicist |
| Rain Angeles | Systems Administrators & Support |
| Ariandy Chandra | Title Designer |
| Zhaoping Wei | Visual Development |
| Evrim Akyilmaz | Visual Effects |
| Benjamin Andersen | VFX Artist |
| Greg Beckman | VFX Artist |
| Tyson Erze | VFX Artist |
| Robert Kopinsky | VFX Artist |
| Katie Van Maanen | VFX Artist |
| Stuart Sumida | Thanks |
| Greg Loskorn | Score Engineer |
| Bruce Seifert | Associate Producer |
| Pierre-Olivier Vincent | Art Direction |
| Matt Robertson | Administration |
| Vana Dabney | Animation Production Assistant |
| Katrina Conwright | Animation |
| David Couchariere | Animation |
| Lou Dellarosa | Animation |
| Cameron Fielding | Animation |
| James Hull | Animation |
| Scott Lafleur | Animation |
| Ken Morrissey | Animation |
| Gabriele Pennacchioli | Animation |
| George Schermer | Animation |
| Sean Sexton | Animation |
| Kevan Shorey | Animation |
| Bill Tessier | Animation |
| Greg Whittaker | Animation |
| Scott Wright | Animation |
| Adam Strick | Animation |
| Maurissa Horwitz | Assistant Editor |
| Lauren Lear | Assistant Editor |
| Joe Monteleone | Assistant Editor |
| Mary Blee | Associate Editor |
| Gaku Nakatani | CG Supervisor |
| Tony Siruno | Character Designer |
| Tom Molet | Creature Technical Director |
| Gilbert Davoud | Creature Technical Director |
| Sandy Kao | Creature Technical Director |
| Cara Malek | Creature Technical Director |
| Mariette Marinus | Creature Technical Director |
| Cliff B. Mitchell | Creature Technical Director |
| Sean W. Nolan | Creature Technical Director |
| Sven Pohle | Creature Technical Director |
| Dug Stanat | Creature Technical Director |
| David Walden | Creature Technical Director |
| Brent Watkins | Creature Technical Director |
| Guido Zimmermann | Creature Technical Director |
| Matt Steele | Creature Technical Director |
| Jeff Olm | Color Designer |
| Panos Asimenios | ADR Supervisor |
| Daniel Hashimoto | Editorial Coordinator |
| Stephen L. Meek | First Assistant Editor |
| Amy Rae Jones | Master Lighting Artist |
| Sebastien Chort | Master Lighting Artist |
| Mark A. Decker | Lighting Artist |
| Kurt Kaminski | Lighting Artist |
| Charles Ellison | Modeling |
| Ardie Johnson | Modeling |
| Soongu Kwon | Modeling |
| Andre Rodriguez Sr. | Modeling |
| Jung Jin Kang | Modeling |
| Jeff Wagner | Modeling |
| Vivian Milanova | Musician |
| Jonathan Williams | Musician |
| Tom Pigott-Smith | Musician |
| Richard Baughman | Musician |
| Paul Cathers | Musician |
| Nick Coseboom | Musician |
| Jennifer Febre | Musician |
| Trevor Takahashi | Musician |
| Scott Kilty | Systems Administrators & Support |
| Todd Maugh | Systems Administrators & Support |
| Daniel Baker | Orchestrator |
| Angus O'Sullivan | Orchestrator |
| Jessica Forer | Production Office Assistant |
| G. Mark Fitzgerald | Animation Department Coordinator |
| Charlie Petrek | Animation Department Coordinator |
| Matthew C. Campbell | Production Coordinator |
| T. Patrick Johnson | Production Coordinator |
| Megan McDonald | Production Coordinator |
| Shane Mulholland | Production Coordinator |
| Karen L. Whitaker | Production Coordinator |
| Craig Rittenbaum | Production Manager |
| Michael Lynn | Production Supervisor |
| Robyn Mesher | Production Supervisor |
| Steven Schweickart | Production Supervisor |
| Larry Weisberg | Production Supervisor |
| Dawn Yamada | Production Supervisor |
| Jabari Phillips | Script Coordinator |
| Gregg Carrier | Software Engineer |
| Kyle Kirkland | Software Engineer |
| Mackenzie Thompson | Software Engineer |
| Esteban Fernández-Juricic | Thanks |
| Debbie L. O'Keeffe | Thanks |
| Penny Scott-Fox | Thanks |
| Scott Sakamoto | Script Coordinator |
| Jakob Hjort Jensen | Supervising Animator |
| Gabe Hordos | Supervising Animator |
| Gregory Brentin | Supervising Technical Director |
| Chris Clad | Musician |
| John-Eric Cardon de Lichtbuer | Visual Development |
| Nathan Fowkes | Visual Development |
| Iuri Lioi | Visual Development |
| Margaret Wuller | Visual Development |
| Michael Yamada | Visual Development |
| Zachary Carter | Visual Effects |
| Ronald D. Henderson | Visual Effects |
| Stephen Wood | VFX Artist |
| Steven Blakey | VFX Artist |
| Robert Chen | VFX Artist |
| Brian C. Davis | VFX Artist |
| Landon Gray | VFX Artist |
| Andy Hayes | VFX Artist |
| Laurent Kermel | VFX Artist |
| Olive Lin | VFX Artist |
| John Patton | VFX Artist |
| Thomas Pushpathadam | VFX Artist |
| Celambarasan Ramasamy | VFX Artist |
| Allen Ruilova | VFX Artist |
| Stephanie Siebert | VFX Artist |
| Lauren Simpson | VFX Artist |
| Stuart Tett | VFX Artist |
