Athanasius (born Antony Shumlianski; died 1694) was Brother of Iosyf Shumliansky and a former Orthodox bishop of Lutsk from 1686 to 1688. In 1688 he converted to Catholicism and the union in the diocese declared his successor Dionysius (1702).
References Encyclopedia of Ukrainian studies. In 10's t / Gl. yet. Kubiyovych Vladimir. – Paris, New York: Young Life, 1954–1989.