ODO (Si), second abbot of Clugni in France, was illustrious for learning and piety in the 10th century. The sanctity of his life contributed greatly to enlarge the congregation of Clugni; and he was so esteemed, that popes, bishops, and secular princes, usually chose him the arbiter of their disputes. He died about the year 942, and his works are printed in the Bibliotheque of Clugni.