Vienna is an unincorporated community in Pickens County, Alabama, United States. It was a prosperous river port from the 1830s until the American Civil War, situated along the eastern shore of the Tombigbee River on the southwestern border of the county. It declined rapidly in importance with the building of a railroad through Pickens County following the war. In 1917 the post office closed and this marked the end of Vienna's official status as a town.