Henry Ware (April 1, 1764 – July 12, 1845) was a preacher and theologian influential in the formation of Unitarianism and the American Unitarian Association in the United States.Henry Ware Jr. (April 21, 1794 - September 22, 1843) was an influential Unitarian theologian, early member of the faculty of Harvard Divinity School, and first president of the Harvard Musical Association. He was a mentor of Ralph Waldo Emerson when Emerson studied for the ministry in the 1820s.