Elenco Principal da Temporada 12

1. 

   Travis Fimmel

   Ragnar Lothbrok

2. 

   Gustaf Skarsgård

   Floki

3. 

   Clive Standen

   Rollo

4. 

   Katheryn Winnick

   Lagertha

5. 

   Jessalyn Gilsig

   Siggy Haraldson

6. 

   Alexander Ludwig

   Bjorn Lothbrok

7. 

   Alyssa Sutherland

   Aslaug

8. 

   Maude Hirst

   Helga

9. 

   George Blagden

   Athelstan

10. 

    Linus Roache

    King Ecbert

11. 

    Donal Logue

    King Horik

12. 

    Moe Dunford

    Aethelwulf

Convidados Especiais 15

1. 

   Georgia Hirst

   Torvi

2. 

   Jefferson Hall

   Torstein

3. 

   Aaron Lee Reed

   Viking (uncredited)

4. Alan Devine

   Ealdorman Eadric

5. 

   Fionn Foley

   Bell Monk

6. 

   Chris Gallagher

   Monk

7. Edmund Kente

   Bishop Swithern

8. 

   M.E. Lewis

   Old Warrior

9. 

   Duncan Lacroix

   Ealdorman Werferth

10. 

    Morten Suurballe

    Sigvard

11. 

    Thorbjørn Harr

    Jarl Borg

12. 

    Cormac Melia

    Ubbe

13. 

    Cathal O'Hallin

    Hvitserk

14. 

    Edvin Endre

    Erlendur

15. 

    Philip O'Sullivan

    Bishop Edmund

Equipa Técnica 4