Catherine Daingerfield Willis Gray Murat (August 17, 1803 – August 6, 1867) was an American socialite and preservationist. In 1858, she was appointed the first vice regent for Florida by the Mount Vernon Ladies' Association. Together with Ellen Call Long, she raised significant funds for the acquisition and restoration of Mount Vernon. Catherine Murat was the great-grandniece of George Washington and was married to the former Prince Achille Murat.