Magnús Óláfsson (died 1265) was a mid 13th century Manx-Hebridean king, the son of Óláfr Guðrøðarson, King of the Isles. Magnús and Óláfr descended from a long line of Norse-Gaelic kings who ruled the Isle of Man (Mann) and parts of the Hebrides. Some leading members of the Crovan dynasty, such as Óláfr, styled themselves "King of the Isles"; other members, such as Magnús and his brothers, styled themselves "King of Mann and the Isles". Although kings in their own right, leading members of the Crovan dynasty paid tribute to the Kings of Norway and generally recognised a nominal Norse overlordship of Mann and the Hebrides.