David Hammel (November 26, 1838 – October 13, 1928) was an American businessman and politician. Born in Prussia, Hammel emigrated to the United States in 1852 and settled in Syracuse, New York. He then moved to Hamilton, Ontario, Canada and then settled in Appleton, Wisconsin, in 1866. He was a merchant and manufacturer of flour barrel staves. In 1876 and 1877, Hammel served in the Wisconsin State Assembly and was a Democrat. Hammel also served on the school board and was the board treasurer. Later, he traded in cattle and horses and owned a stable in Appleton. From 1900 to 1903 and in 1906 and 1907, Hammel served as mayor of Appleton, Wisconsin. After leaving office, Hammel moved to Austin, Minnesota, and continued in horse and cattle trading. His health failed and he moved to Chicago, Il