Suibne mac Cináeda (died 1034) was an eleventh-century ruler of the "Gall Gaidheil", a population of mixed Scandinavian and Gaelic ethnicity. There is little known of Suibne as he is only attested in three sources that record the year of his death. He seems to have ruled in a region where "Gall Gaidheil" are known to have dwelt: either the Hebrides, the Firth of Clyde region, or somewhere along the south-western coast of Scotland from the Firth of Clyde southwards into Galloway.