Sturla Gunnarsson Director, Producer Gerard Butler Beowulf Actor Stellan Skarsgård Hrothgar Actor Ingvar Eggert Sigurðsson Grendel Actor Sarah Polley Selma Actor Eddie Marsan Brendan the Priest Actor Tony Curran Hondscioh Actor Rory McCann Breca Actor Ronan Vibert Thorkel Actor Martin Delaney Thorfinn Actor Andrew Rai Berzins Writer Michael Cowan Producer Gary Hamilton Producer Friðrik Þór Friðriksson Executive Producer Peter James Executive Producer Alex Marshall Executive Producer James D. Stern Executive Producer Jan Kiesser Cinematographer Jeff Warren Film Editing Hilmar Örn Hilmarsson Original Music Árni Páll Jóhannsson Production Design Debra Hanson Costume Design Pam Dixon Casting