Wettin, House of, a German family from which several European royal families are descended. One of its members was Prince Albert of Saxe-Coburg-Gotha, husband of Queen Victoria of Great Britain and father of King Edward VII. Until 1918 members of one branch of the Wettins were kings of Saxony and Poland and dukes of the Saxon duchies. Other Wettins included Leopold of Saxe-Coburg, first king of Belgium; Ferdinand, who married the queen of Portugal in 1836; and Ferdinand, tsar of Bulgaria until 1918.

The earliest known Wettin ancestor was Dietrich, a count of central Germany, who was killed in 982. His son Dedo I received the county of Wettin, later part of Prussia. Dedo's grandson Dedo II, who died in 1073, greatly extended the Wettin holdings, but quarreled with the Hohenstaufens of the Holy Roman Empire and lost much of his land.