Hugh I was duke of Burgundy between 1076 and 1079. Hugh was son of Henry of Burgundy and grandson of Duke Robert I. He inherited Burgundy from his grandfather, following the premature death of Henry, but abdicated shortly afterwards in favor of his brother Odo I, in order to become a monk at Cluny. He briefly fought the Moors in the Iberian Peninsula with Sancho of Aragón.