Prince Gustav Franz Maria of Thurn and Taxis, full German name: Gustav Franz Maria, Prinz von Thurn und Taxis (22 August 1888, Dresden, Kingdom of Saxony – 30 April 1919, Munich, Bavarian Soviet Republic), 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 (German: Bayerische Räterepublik) government during the German Revolution of 1918–19.