Marie Antoinette Murat, French: Marie Antoinette Murat, Princesse Murat (3 January 1793, Labastide-Murat, Lot, French Republic – 19 January 1847, Sigmaringen, Principality of Hohenzollern-Sigmaringen) was a member of the House of Murat. Through her marriage to Charles, Prince of Hohenzollern-Sigmaringen, Marie Antoinette was also a member of the House of Hohenzollern-Sigmaringen and Princess consort of Hohenzollern-Sigmaringen. Marie Antoinette was the niece of Joachim Murat, King of Naples from 1808 to 1815 and a brother-in-law of Napoleon Bonaparte, through marriage to Napoleon's youngest sister, Caroline Bonaparte.

Marie Antoinette was a daughter of Pierre Murat (elder brother of Joachim Murat, King of the Two Sicilies) and his wife Louise d'Astorg.

Marie Antoinette married Charles, Hereditary Prince of Hohenzollern-Sigmaringen, eldest son of Anton Aloys, Prince of Hohenzollern-Sigmaringen and his wife Princess Amalie Zephyrine of Salm-Kyrburg, on 4 February 1808 in Paris. Marie Antoinette and Charles had four children: