República Soviética de Baviera
Prince Gustav Franz Maria of Thurn and Taxis, (22 August 1888 – 30 April 1919) was a member of the House of Thurn and Taxis and a Prince of Thurn and Taxis by birth. As a member of the Thule Society, Gustav was killed by the Bavarian Soviet Republic () government during the German Revolution of 1918–19.