Julius H. Dennhardt (February 5, 1869 – March 19, 1929) was an American auctioneer, businessman, and politician.
Born in Naumberg, Saxony in what is now Germany, Dennhardt emigrated to the United States and settled in Wisconsin as a young man. He was in the implement business and was an auctioneer. Dennhardt served in the Wisconsin State Assembly in 1911 and was a Republican. He then served in the Wisconsin State Senate in 1919. In 1922, Dennhardt served as mayor of Neenah, Wisconsin. Dennhardt died of a stroke in Neenah, Wisconsin.[1] [2]