Ada Esther Leverson (née Beddington; 10 October 1862 - 30 August 1933) was a British writer who is known for her friendship with Oscar Wilde and for her work as a witty novelist of the fin-de-siècle. Leverson began writing during the 1890s, as a contributor to Black and White, Punch, The Yellow Book, St. Stephen's Review, Saturday Review, and Referee. She also worked as a drama critic, though when and what she wrote is unknown. Much of her work cannot be identified because she wrote anonymously, because she frequently befriended the people she parodied and critiqued. She was known as a wit; her writing has been compared to the work of Max Beerbohm and the stories of Saki.