Ragnall mac Gofraid (died 1004/1005) was King of the Isles and likely a member of the Uí Ímair kindred. He was a son of Gofraid mac Arailt, King of the Isles. Ragnall and Gofraid flourished at a time when the Kingdom of the Isles seems to have suffered from Orcadian encroachment at the hands of Sigurðr Hlǫðvisson, Earl of Orkney. Gofraid died in 989. Although Ragnall is accorded the kingship upon his own death in 1004 or 1005, the succession after his father's death is uncertain.