Travis Fimmel as Ragnar Lothbrok,
Katheryn Winnick as Lagertha,
Clive Standen as Rollo,
Jessalyn Gilsig as Siggy ,
Gustaf Skarsgård as Floki,
George Blagden as Athelstan ,
Gabriel Byrne as Earl Haraldson ,
Alyssa Sutherland as Aslaug ,
Donal Logue as Horik of Denmark,
Alexander Ludwig as Bjorn Ironside ,
Linus Roache as Ecbert of Wessex ,
Ben Robson as Kalf ,
Kevin Durand as Harbard ,
Lothaire Bluteau as Charles of West Francia ,
John Kavanagh as The Seer and Pope Leo IV,
Peter Franzén as Harald Finehair ,
Jasper Pääkkönen as Halfdan the Black,
Moe Dunford as Aethelwulf,
Alex Høgh as Ivar the Boneless ,
Marco Ilsø as Hvitserk,
David Lindström as Sigurd Snake-in-the-Eye,
Jordan Patrick Smith as Ubbe,
Jonathan Rhys Meyers as Bishop Heahmun