Haraldr Óláfsson (born 1223 or 1224; died 1248) was a thirteenth-century King of Mann and the Isles, and a member of the Crovan dynasty. He was one of several sons of Óláfr Guðrøðarson, King of the Isles, although the identity of his mother is uncertain. When his father died in 1237, Haraldr succeeded to the kingship as a fourteen-year-old, and held the kingship for about a decade afterwards.
