Denise Launay (7 October 1906 â 13 March 1993) was a 20th-century French organist and musicologist.
Launay studied the history of music with André Pirro and Paul-Marie Masson at the Sorbonne, and the organ with André Marchal and Gaston Litaize. From 1939, she was a curator at the Bibliothèque Nationale de France. She was the organist at the Notre-Dame-de-Lorette church in Paris during 35 ans.
She was buried at , alongside her father Paul Yvon, a member of the Académie Nationale de Médecine.