Carl XVI Gustaf (full name: Carl Gustaf Folke Hubertus, born 30 April 1946) is the reigning King of Sweden since 15 September 1973, succeeding his grandfather King Gustaf VI Adolf because his father had predeceased him. He is the only son of the late Prince Gustaf Adolf, Duke of Västerbotten, and Princess Sibylla of Saxe-Coburg and Gotha.
Unlike many other European monarchs who have extensive styles, King Carl Gustaf's formal and complete style is simply His Majesty Carl XVI Gustaf, King of Sweden. The King's heir apparent, upon passage on 1 January 1980 of a new law establishing equal primogeniture (the first such law passed in European history), is Crown Princess Victoria, the eldest child of the King and his wife, Queen Silvia. He is also 203rd in the line of succession to the British and other Commonwealth thrones.