Delphine de Girardin pen name Vicomte Delaunay, was a French author.
She was born at Aachen, and christened Delphine Gay. Her mother, the well-known Madame Sophie Gay, brought her up in the midst of a brilliant literary society. Her cousin was the writer Hortense Allart.
Gay published two volumes of miscellanea, Essais poetiques (1824) and Nouveaux Essais poetiques (1825). A visit to Italy in 1827, during which she was enthusiastically welcomed by the literati of Rome and even crowned in the capitol, produced various poems, of which the most ambitious was Napoline (1833).