Nathan O'Toole is the Irish actor. He portrays Bjorn in the History Channel series Vikings.


His first TV job was on Neil Jordan's The Borgias.

Having made an impression, he was then chosen for the role in Vikings – even though he did not quite look the part, since they were looking for someone with blond hair and blue eyes, wherein he had brown hair and brown eyes, so he had to dye his hair and wear contacts for the role.