USS Reina Mercedes (IX-25) was an unprotected cruiser of the Spanish Navy which was captured in Cuba in 1898 by the U.S. Navy during the Spanish–American War. She was refurbished and used by the U.S. Navy as a non-self-propelled receiving ship at Newport, Rhode Island, and subsequently as a detention vessel and barracks ship for the United States Naval Academy in Annapolis, Maryland, until 1957. For an article on the technical characteristics and operational history of Reina Mercedes as a Spanish cruiser, see Spanish cruiser Reina Mercedes.