Diane, Dowager Duchess of Württemberg is a French-German painter, sculptor, writer and philanthropist. She is the widow of Carl, Duke of Württemberg, head of the House of Württemberg. She is the fourth daughter and sixth child of Henri, Count of Paris, Orléanist pretender to the throne of France, and his wife, Princess Isabelle of Orléans-Braganza.

Carl Maria Peter Ferdinand Philipp Albrecht Joseph Michael Pius Konrad Robert Ulrich Herzog von Württemberg was the head of the House of Württemberg from 1975 to 2022. He was succeeded by his grandson Wilhelm.