• 
  Sturla Gunnarsson

  regizor

• 
  Andrew Rai Berzins

  scenarist

• 
  Gerard Butler

  Beowulf
• 
  Ingvar Eggert Sigurasson

  Grendel
• 
  Hringur Ingvarsson

  Grendel (tanar)
• 
  Spencer Wilding

  Tatal lui Grendel
• 
  Stellan Skarsgård

  Hrothgar
• 
  Sarah Polley

  Selma

• 
  Ingvar Sigurdsson

  Grendel
• 
  Ólafur Darri Ólafsson

  Unferth
• 
  Elva Ósk Ólafsdóttir
• 
  Egill Olafsson

  Necrophile
• 
  Gunnar Eyjolfsson

  Aeschere
• 
  Rory McCann

  Breca
• 
  Tony Curran

  Hondscioh

• 
  Þröstur Leó Gunnarsson

  Paznic
• 
  Gísli Örn Garðarsson

  Erik
• 
  Eddie Marsan

  Father Brendan
• 
  Helgi Björnsson

  Bărbat
• 
  Ronan Vibert

  Thorkel
• 
  Martin Delaney

  Thorfinn
• 
  Mark Lewis

  King Hygelac
• 
  Philip Whitchurch

  Fisherman
• 
  Steinunn Ólína Þorsteinsdóttir

  Wealtheow