Domhnall Dubh ("Black Donald", died 1545) was a Scottish nobleman. He was the son of Aonghas Óg, chief of Clan Donald (Clann Domhnaill), and claimant to the Lordship of the Isles, which had been held by his grandfather John of Islay, Earl of Ross (Eoin MacDomhnaill). While just an infant, Domhnall Dubh was captured by Colin Campbell, 1st Earl of Argyll