Anthelm of Belley (1107–1178) was a prior of the Carthusian Grand Chartreuse and bishop of Belley. He was born near Chambéry in 1107. He would later receive an ecclesiastical benefice in the area of Belley. When he was thirty years old, he resigned from this position to become a Carthusian monk at Portes. Only two years after joining the order, he was made the prior of the Grande Chartreuse, the motherhouse of his order, which had recently incurred substantial damage. He was an effective administrator there.