Donald Crisp
— Leif Ericsson
Pauline Starke
— Helga Nilsson
LeRoy Mason
— Alwin
Anders Randolf
— Eric the Red (as Anders Randolph)
Richard Alexander
— Sigurd
Harry Woods
— Egil (as Harry Lewis Woods)
Albert MacQuarrie
— Kark
Roy Stewart
— King Olaf
Torben Meyer
— Odd
Claire McDowell
— Lady Editha (as Claire MacDowell)
Julia Swayne Gordon
— Thorhild
Iron Eyes Cody
— Indian (uncredited)
Lon Poff
— Friar Slain by Vikings (uncredited)
Dick Sutherland
— Viking (uncredited)
Frank Ellis
— Man Who Gives Sword To Alwin (uncredited)
Eugene McDonald
Francis McDonald
— Viking Friend of Leif (uncredited)
Angelo Rossitto
— Viking Little Person (uncredited)