Donnell Claragh O'Neill (Irish: Domhnall Clarach Ó Néill, died 1509), was a member of the O'Neill Dynasty of Tír Eoghain, Ulster in medieval Ireland. He was the son of Con O'Neill, and a half-brother to Henry Oge O'Neill. He succeeded Henry as chief of the O'Neills, and ruled from 1498 to 1509. He was in turn succeeded by a cousin Art O'Neill.[1]