The first USS South Dakota (ACR-9/CA-9), also referred to "Armored Cruiser No. 9", and later renamed Huron, was a United States Navy Pennsylvania-class armored cruiser.

The Pennsylvania class of six armored cruisers served in the United States Navy from 1905 to 1927. All six were renamed for cities 1912–1920, to make the state names available for the new battleships beginning with the Pennsylvania-class battleships. All of these served during World War I, with California being the only ship of the class to be lost. The remaining five armored cruisers were scrapped between 1930 and 1931 in accordance with the London Naval Treaty.