Marie Christine Caroline Adélaïde Françoise Léopoldine d'Orléans (12 April 1813 in Palermo – 6 January 1839 in Pisa) was a French princess and, by her marriage, duchess of Württemberg (1837). Before her marriage she was styled Mademoiselle de Valois.

She was the third child (and second daughter) of Louis-Philippe, King of the French, and his wife Maria Amalia, daughter of King Ferdinand I of Naples. She was solidly educated on her father's insistence, and took up sculpture and drawing. She had her own studio installed in the Tuileries Palace in which she would work. She was described as a lively character with great energy, interested in both parties and politics.

At the beginning of 1834, due to the consolidation of the July Monarchy and a better acceptance of Louis-Philippe by the monarchs of Europe, the King of the Two Sicilies, Ferdinand II, gave his consent to the marriage of princess Marie of Orléans with one of his younger brothers. Leopold of the Two Sicilies (1813–1860), count of Syracuse, was (like Ferdinand) born of king Francis I's second marriage to Maria Isabella of Spain. Nephew of Maria's mother (queen Maria Amalia), he was thus also half-brother to the duchesse de Berry, born by Francis I's first marriage to archduchess Maria Clementina of Austria,and mother of the Legitimist pretender to the throne of France, the duc de Bordeaux.

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