Antonio Maria Luis Felipe Juan Florencio de Orléans y Borbon (23 February 1866, Seville – 24 December 1930, Paris) was an Infante of Spain and the fourth Duke of Galliera in the Kingdom of Italy. He was a member of the Spanish Royal Family and a grandson of Louis-Philippe of France.

Antonio was the only surviving son of Prince Antoine of Orléans, Duke of Montpensier and his wife Infanta Luisa Fernanda of Spain. Through his father, he was a grandson of King Louis Philippe of the French and his wife Princess Maria Amalia of the Two Sicilies. Through his mother, he was a grandson of King Ferdinand VII of Spain and his wife Princess Maria Christina of the Two Sicilies.

Antonio was born in Seville, shortly before the end of the reign of his aunt Queen Isabella II of Spain. Due to the Glorious Revolution of 1868 which chased his family from Spain, he spent most of his childhood abroad. Yet his ambitious and liberal father Antoine, Duke of Montpensier, had some relations with the revolutionaries who forced him to flee his country of adoption. In fact, the uprising was prepared with his money and he hoped to be elected king in exchange. However, the attempt failed and the banishment of the House of Orléans was confirmed by the Spanish interim government.

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