Constance Gwladys Robinson, Marchioness of Ripon (22 April 1859 – 28 October 1917), was a British patron of the arts. She was a close friend of Oscar Wilde, who dedicated his play A Woman of No Importance to her; other celebrated friends included Nellie Melba, whose success in London was largely due to Lady Ripon's support, Nijinsky and Diaghilev.