Niebuhr, Reinhold (1892-1971), American Protestant theologian, whose social doctrines profoundly influenced American theological and political thought. Born in Wright City, Missouri, June 21, 1892, he was educated at Elmhurst College, Elmhurst, Illinois; Eden Theological Seminary, Webster Groves, Missouri; and Yale Divinity School. In 1915 he was ordained in the ministry of the Evangelical Synod of North America and made pastor of the Bethel Evangelical Church of Detroit. He held that post until 1928, at which time he joined the faculty of the Union Theological Seminary, New York City, where he taught for 30 years. At the time of his retirement (1960) he held a c