Vikar was a legendary Norwegian petty king who appears in several historical and mythological sagas. Because of his role in these narratives, he is often associated with various regions and titles depending on the specific text.
The name Víkar Haraldsson is used in Gautreks saga to identify him as the king of Agder. In contrast, Halfs saga refers to him as Víkar Alreksson, identifying him as the king of Hordaland. Additionally, he is mentioned in the Gesta Danorum under the name Wicarus, where he is described as a king of Norway.