The Beauregard-Keyes House is a historic residence located at 1113 Chartres Street in the French Quarter, New Orleans, Louisiana. It is currently a museum focusing on some of the past residents of the house, most notably Confederate General Pierre Gustave Toutant Beauregard and American author Frances Parkinson Keyes. Pierre Gustave Toutant Beauregard married his second wife, Caroline Deslonde, in 1860. Caroline was the daughter of André Deslonde, a sugar planter from St. James Parish. The newlyweds honeymooned briefly in the house.
After the American Civil War, Beauregard returned to 1113 Chartres Street and lived in the house from 1866 to 1868. American author Frances Parkinson Keyes purchased the house at 1113 Chartres Street and made it her residence. While residing at the house, Keyes wrote numerous books, some of which included Beauregard as a character. The house and Beauregard were at the center of her novel Madame Castel's Lodger.