William Julius Mann (1819–1892) was an American Lutheran theologian and author, born in
Stuttgart,
Germany. He studied there and at
Tübingen and was ordained in 1841. Three years later he was invited by his friend Dr.
Philip Schaff to come to the United States and settled in
Philadelphia. There he was assistant pastor (1850–1863) and pastor (1863–1884) of St. Michael's and Zion's Church. From its establishment in 1864 almost to his death he was
professor of symbolics (the study of the
lutheran confessions) at the
Lutheran Theological Seminary. With Dr. Schaff he edited Der deutsche Kirchenfreund. His daughter, Emma T. Mann, wrote his Life, (Philadelphia, 1893). His german and english publications include:
Plea for the
Augsburg Confession, in Answer to the Objections of the Definite Platform (1856)