In Norse mythology, Völsung (Old Norse: Vǫlsungr) was the son of Rerir and the eponymous ancestor of the ill-fortuned Völsung clan (Old Norse: Vǫlsungar), which includes the well known Norse hero Sigurd. He was murdered by the Geatish king Siggeir and later avenged by one of his sons, Sigmund, and his daughter Signy, who was married to Siggeir.