Joshua Lanier Martin (December 5, 1799 – November 2, 1856) was an American Democratic Party politician who served (as an Independent) as the 12th Governor of the U.S. state of Alabama from 1845 to 1847. He also served as a representative to the United States Congress for Alabama's 2nd district from 1835 to 1839. Born on 5 December 1799 in Blount County, Tennessee.