Olga Lebedeva (née Barshcheva; Russian: Ольга Сергеевна Лебедева; 1852 — 193?) was a Russian translator, linguist and Orientalist. She was a founder of the Society of Oriental Studies in St Petersburg. Writing as Madame Gülnar, Gülnar Hanım, Gülnar Lebedeva and Olga de Lebedeff, she was one of the first to introduce Russian literature to Turkey. She is recognised for her pioneering contributions to the literary networks between the Ottoman and the Russian empires at the end of the 19th century.