Pope Peter II of Alexandria was the 21st Patriarch of Alexandria, serving from 373 to 381. A dedicated disciple of Athanasius, he was chosen as his predecessor's successor. His tenure was marked by intense theological conflict, as Arian opponents attempted to remove him from his position. After being driven from his city by the prefect Palladius, he sought refuge in Rome, where he received support from Pope Damasus I and participated in a council to condemn Apollinarism.