The Battle of Doire Leathan took place on 3 September 1590 at Doire Leathan in south-western County Donegal, Ireland as part of the ongoing succession dispute for the leadership of the Gaelic lordship of O'Donnell. A force of Scottish Redshank mercenaries hired by Ineen Dubh on behalf of her son Hugh Roe O'Donnell defeated and killed the leading rival to the O'Donnell lordship of Tyrconnell, Sir Donnell O'Donnell. Hugh Roe was at the time imprisoned in Dublin Castle, but later rose to head the O'Donnells and was a prominent figure during Tyrone's Rebellion.
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