Pablo José Arriaga, SJ (Arriga; Vergara, Biscay, 1564 – died at sea, 1622) was a Spanish Jesuit missionary in South America.
In 1588 he was appointed rector of the College of San Martin at Lima, which post he filled thrice in the course of twenty-four years.
It was during the period from 1604 to 1622 that Father Arriaga became identified with the task of uprooting the survivals of indigenous religion in Peru.
In 1620 he completed his Extirpacion de l'Idolatría en el Perú (Lima, 1621).
He also wrote an ecclesiastic rhetoric: Rhetoris Christiani partes septem: exemplis cum sacris tum philosophicis illustratae.