Alexander Skarsgård

Amleth

Nicole Kidman

Queen Gudrún

Claes Bang

Fjölnir the Brotherless

Ethan Hawke

King Aurvandil War-Raven

Anya Taylor-Joy

Olga of the Birch Forest

Gustav Lindh

Thórir the Proud

Elliott Rose

Gunnar

Willem Dafoe

Heimir the Fool

Phill Martin

Hallgrímr Half-Troll

Eldar Skar

Finnr the Nose-Stub

Olwen Fouéré

Áshildur Hofgythja

Ingvar E. Sigurðsson

He-Witch

Oscar Novak

Young Amleth

Jack Walsh

Hallur Freymundur

Björk

Seeress

Ian Whyte

The Mound Dweller

Katie Pattinson

Shield Maiden

Kate Dickie

Halldóra the Pict

Ísadóra Bjarkardóttir Barney

Melkorka

Seamus O'Hara

Audunn the Irish

Tadhg Murphy

Eiríkr Blaze-Eye

Hafþór Júlíus Björnsson

Thórfinnr Tooth-Gnasher

Ian Gerard Whyte

Thórvaldr Giant-Crusher

Ralph Ineson

Captain Volodymyr

Murray McArthur

Hákon Iron-Beard

Jon Campling

Standard Bearer

Faoileann Cunningham

Kormlöth

Gareth Parker

The Hird Officer

Eric Higgins

Ketill the Whale Sided

Luca Evans

Ivan

James Harper-Jones

Vasill

Thomas Harper-Jones

Stanislav

Sheila Flitton

Lyudmila

Lily Bird

The Maiden King

Mark P. O'Connor

Villager (uncredited)