Hugh III (French: Hugues) was count of Saint-Pol from 1130 until his death in 1141.
He waged a vigorous war against the Collet family, whom he forced to take refuge in the abbey of Saint-Riquier.
After besieging the fortress, he stormed it on 28 August 1131 and put it to fire and the sword, killing men, women, and children, including the clergy.
His further atrocities against the clergy brought the intervention of King Louis VI, at which point he submitted to penance.
He obtained the absolution of Pope Innocent II in 1137 by financing the foundation of three abbeys: Cercamp, Klaarkamp, and Ourscamp.