Gustav Adolf of Sweden – English (and Latin) also: Gustavus Adolphus; Swedish: Gustav Adolf and (legal spelling after 1900): Gustaf Adolf – may refer to: Gustavus Adolphus (Gustav II Adolf, 1594–1632), King of Sweden 1611–1632 Gustav IV Adolf (1778–1837), King of Sweden 1792–1809 Gustaf VI Adolf (Gustav VI Adolf, 1882–1973), King of Sweden 1950–1973 Gustav Adolf, Prince of Sweden de facto 1652, son of Prince Adolph John I, Count Palatine of Kleeburg (died in infancy) Prince Gustaf Adolf, Duke of Västerbotten (1906–1947), Prince of Sweden