In Norse mythology, Þorgerðr Hölgabrúðr and Irpa are goddesses. Þorgerðr and Irpa appear together in Jómsvíkinga saga, Njáls saga, and Þorleifs þáttr jarlsskálds. Irpa does not appear outside of these four attestations, but Þorgerðr also appears in the Prose Edda book Skáldskaparmál, Færeyinga Saga, and Harðar saga ok Hólmverja, and is mentioned in Ketils saga hœngs. Þorgerðr is particularly associated with Haakon Sigurdsson, and, in Jómsvíkinga saga and Þorleifs þáttr jarlsskálds, she and Irpa are described as sisters. The roles of the goddesses in these sources, and the implications of their names, has resulted in an amount of scholarly discourse and theory.