USS New Mexico (BB-40) was a battleship in service with the United States Navy from 1918 to 1946. She was the lead ship of a class of three battleships. New Mexico was extensively modernized between 1931 and 1933 and served in World War II in both the Battle of the Atlantic and the Pacific Theater. After her decommissioning she was scrapped in 1947. New Mexico was the first US Navy ship named for the US state of New Mexico.