The Principality of Albania was a short-lived monarchy in Albania, headed by Wilhelm, Prince of Albania, that lasted from the Treaty of London of 1913 which ended the First Balkan War, through the invasions of Albania during World War I and the subsequent disputes over Albanian independence during the Paris Peace Conference of 1919, until 1925, when the monarchy was abolished and the Albanian Republic declared.

Wilhelm, Prince of Albania was sovereign of the Principality of Albania from 7 March to 3 September 1914. His reign officially came to an end on 31 January 1925, when the country was declared an Albanian Republic.