Carl, Duke of Württemberg, KOGF (Carl Maria Peter Ferdinand Philipp Albrecht Joseph Michael Pius Konrad Robert Ulrich Herzog von Württemberg, born 1 August 1936) is the current head of the House of Württemberg.

He was born in Friedrichshafen, Baden-Württemberg, the second son of Philipp Albrecht, Duke of Württemberg (1893–1975) and Archduchess Rosa of Austria, Princess of Tuscany (1906–1983). He became heir to the headship of the House of Württemberg after his older brother Ludwig renounced his succession rights.

On 21 July 1960, he married Princess Diane of Orléans (born 1940), the daughter of Henri, comte de Paris. They have four sons and two daughters