Geneviève Joy (French: [ʒənvjɛv ʒwa]; 4 October 1919 – 27 November 2009) was a French classical and modernist pianist who, at the end of World War II in 1945, formed a critically acclaimed duo-piano partnership with Jacqueline Robin which lasted for forty-five years, until 1990. The composer Henri Dutilleux, whom she married in 1946, dedicated his Piano Sonata to her, which she recorded for Erato Records in 1988. In 1982, she served on the jury of the Paloma O'Shea Santander International Piano Competition.