Hosea Ballou (April 30, 1771 – June 7, 1852) was an American Universalist clergyman and theological writer.
Originally a Baptist, he converted to Universalism in 1789. He preached in a number of towns in Vermont, New Hampshire and Massachusetts. From 1817, he was pastor of the Second Universalist Church of Boston. He wrote a number of influential theological works, as well as hymns, essays and sermons, and edited two Universalist journals. Ballou has been called one of the fathers of American Universalism.