Denise Launay (7 October 1906 – 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.
[1] She was buried at Montfort-l'Amaury Cemetery [fr], alongside her father Paul Yvon, a member of the Académie Nationale de Médecine.