 | Ray Winstone als Beowulf / Golden Man / Dragon |
 | Angelina Jolie als Grendel's Mother |
 | Anthony Hopkins als Hrothgar |
 | John Malkovich als Unferth |
 | Robin Wright als Wealthow |
 | Brendan Gleeson als Wiglaf |
 | Crispin Glover als Grendel |
 | Alison Lohman als Ursula |
 | Paul Baker als Musician #1 |
| John Bilezikjian als Musician #2 |
| Rod D. Harbour als Musician #3 |
 | Brice Martinet als Musician #4 |
| Sonje Fortag als Gitte |
 | Sharisse Baker-Bernard als Hild |
 | Charlotte Salt als Estrith |
 | Julene Renee als Cille |
 | Greg Ellis als Garmund |
 | Rik Young als Eofor |
 | Sebastian Roché als Wulfgar |
 | Leslie Zemeckis als Yrsa |
| Woody Schultz als Aesher |
 | Tyler Steelman als Young Cain |
 | Nick Jameson als Drunken Thane |
 | Shay Duffin als Scylding's Watch |
 | Costas Mandylor als Hondshew |
 | Chris Coppola als Olaf |
 | Dominic Keating als Old Cain |
 | Jacquie Barnbrook als Aethelbeorg |
 | Fredrik Hiller als Frisian Leader |
| Daniel D. McGrew als Beowulf's Scop |
| Alan Jones Silva als Beowulf's Jester |
 | Kevin Dorman als Additional Adult Performer |
 | Richard Burns als Additional Adult Performer |
| Jared Weber als Additional Adult Performer |
| Tom West Jr. als Additional Adult Performer |
 | Chris Mala als Additional Adult Performer |
 | Tim Trobec als Additional Adult Performer |
| Camille Lannan als Additional Adult Performer |
| Michael Lofgren als Additional Adult Performer |
| Rob McCabe als Additional Adult Performer |
 | Larkin Campbell als Additional Adult Performer |
| Chris Cummins als Additional Adult Performer |
 | John Littlefield als Additional Adult Performer |
 | Shawn Driscoll als Additional Adult Performer |
| Amy Esacove als Additional Adult Performer |
| Emily Johnson als Additional Adult Performer |
| Nadine Stenovitch als Additional Adult Performer |
| Anne Marie Wilson als Additional Adult Performer |
 | Fred Tatasciore als Additional Voices (voice) |
| Holly Duff als Voice Performer (voice) |
 | Neil Dickson als Voice Performer (voice) |
 | Peter Lavin als Voice Performer (voice) |
| Matthew A. Ward als Voice Performer (voice) |
 | Peter Dennis als Voice Performer (voice) |
| Keith Kraft als Additional Adult Performer (uncredited) |
| Deborah La Mia Denaver | Makeup Artist |
| Jerome Chen | Visual Effects Supervisor |
| Randy Thom | Sound Designer |
| Alex Bicknell | Visual Effects Supervisor |
| Jeremiah O'Driscoll | Editor |
| Greg Papalia | Art Direction |
| Scott Herbertson | Set Designer |
| Roger Avary | Screenplay |
| Tegan Taylor | Makeup Artist |
| Nacoma Whobrey | Makeup Artist |
| Ken Ralston | Visual Effects Design Consultant |
| Gabriella Pescucci | Costume Design |
| Heather Plott | Makeup Artist |
| Matthew W. Mungle | Makeup Artist |
| Roger Avary | Executive Producer |
| Karen O'Hara | Set Decoration |
| Sean Phillips | Digital Effects Supervisor |
| Martin A. Kline | Visual Effects Art Director |
| Robert Zemeckis | Producer |
| Jack Rapke | Producer |
| Glen Ballard | Original Music Composer |
| Kenn McDonald | Animation Supervisor |
| Neil Gaiman | Screenplay |
| Steve Starkey | Producer |
| Doug Chiang | Production Design |
| Theodore Bialek | CG Supervisor |
| Alan Silvestri | Original Music Composer |
| Jack Rapke | Executive Producer |
| Peter M. Tobyansen | Producer |
| Josh McLaglen | Producer |
| Skye Lyons | Digital Producer |
| Nina Gold | Casting |
| Jacqui Lopez | Producer |
| Debbie Denise | Executive Visual Effects Producer |
| Ronna Kress | Casting |
| Martin Shafer | Executive Producer |
| Carin-Anne Strohmaier | Visual Effects Editor |
| Robert Zemeckis | Director |
| Glenn Pulliam | Makeup Artist |
| Chris Juen | Visual Effects Producer |
| Robert Presley | Director of Photography |
| Sho Igarashi | Hairstylist |
| Steve Starkey | Second Unit |
| Michael Leung | Lighting Artist |
| James Baker | Animation |
| Josh LaBrot | Visual Effects |
| Harald Kraut | Layout |
| Luca Kouimelis | Script Supervisor |
| Roxane Griffin | Hair Department Head |
| Robert Shoup | Sound Effects Editor |
| Kenneth Karman | Music Editor |
| Randy Cantor | Transportation Coordinator |
| Ryan Rubin | Music Editor |
| Jonathan Null | Dialogue Editor |
| Douglas Murray | Sound Effects Editor |
| Al Nelson | Sound Effects Editor |
| Graham Ready | Transportation Captain |
| Dennis Leonard | Supervising Sound Editor |
| William B. Kaplan | Sound mixer |
| John E. Jackson | Makeup Department Head |
| Robert Zemeckis | Writer |
| Marc Vulcano | Senior Animator |
| Marc Gabbana | Concept Artist |
| Nancy Thurston | Stunts |
| J.J. Perry | Stunts |
| Jeffrey J. Dashnaw | Stunts |
| Josh McLaglen | First Assistant Director |
| Garrett Warren | Stunt Coordinator |
| Jason Corgan Brown | Researcher |
| Maria Battle Campbell | Second Assistant Director |
| Steve Starkey | Second Unit Director |
| Richard Bucher | Stunts |
| Matthew R. Anderson | Stunts |
| Brycen Counts | Stunts |
| Thomas DeWier | Stunts |
| Paul Eliopoulos | Stunts |
| Mark Ginther | Stunts |
| Colin Follenweider | Stunts |
| Brett A. Jones | Stunts |
| Kanin Howell | Stunts |
| Jesse V. Johnson | Stunt Coordinator |
| Brian Machleit | Stunts |
| Luke LaFontaine | Stunts |
| Carl Milinac | Stunts |
| Vladimir Orlov | Stunts |
| Brian Simpson | Stunts |
| Felipe Savahge | Stunts |
| Mark Stefanich | Stunts |
| Mike Smith | Stunts |
| Booboo Stewart | Stunts |
| Edwin Villa | Stunts |
| Dominique Vandenberg | Fight Choreographer |
| Kirby Washington | Camera Operator |
