Davi Barton (born 1954) is an author, former teacher, and political activist. He is the author of several books criticizing the current interpretation of separation of church and state in the United States. He was described in a 2005 Time magazine article entitled The 25 Most Influential Evangelicals as "a major voice in the debate over church-state separation." Barton has been described, by Republican Senator Arlen Specter among others, as being a pseudohistorian, and his work has been criticised by a number of historians.