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.