Peter II of Arborea

Peter II (died 1241) was Judge of Arborea, the son of Judge Hugh I and Preziosa of the Massa family of Cagliari. He inherited the throne as a child in 1211 and was compelled by Ubaldo Visconti to marry his daughter Diana. In 1228 rivals William II of Cagliari and Marianus II of Torres defeated him and forced him to share his giudicato, though he later regained full control.

In 1237 he became a vassal of the papacy, promising an annual tribute and the castle of Giripala in return for papal recognition of his sovereignty. He died in 1241, leaving young Marianus II as heir.