Aodh Ruadh Ó Domhnaill, anglicized Hugh Roe Ó Donnell (1572 – 10 September 1602), is King of Tír Chonaill (anglicized Tyrconnell).

Ó Donnell leads a rebellion against English government in Ireland from 1593 and helps Hugh The Great Ó Neill to lead the Nine Years' War (a revolt against English occupation) from 1595 to 1603.