Duke Robert Maria Klemens Philipp Joseph of Württemberg (German: Robert Maria Klemens Philipp Joseph, Herzog von Württemberg) (14 January 1873 in Meran, Austria–Hungary – 12 April 1947 in Schloss Altshausen, Altshausen, Baden-Württemberg, Germany) was a member of the House of Württemberg and a Duke of Württemberg.