Fjölvar

Fjölvar is a being in Norse mythology, possibly a jötunn, with whom Odin spends time fighting and seducing women with on the island of Algrœn.

Name

Fjölvar is an Old Norse name still used today; it was used in Old Norse as an adjective meaning 'very wary, very cautious'.

Fjölvar is only attested once in Hárbardsljód, which tells of Hárbarð spending time with Fjölvar on the island of Algrœn.
This episode was recounted by Odin himself who alone slept with seven sisters on Algrœn in the poem Hárbardsljód, written in the 13th century and included in the Poetic Edda.

According to scholar John Lindow, since the þulur list Fjölvör among the jötnar, it is likely that Fjölvar would have been her male counterpart, and therefore also a jötunn.