Jacques Duphly (also Dufly, Du Phly) was a French harpsichordist and composer. He published four volumes of harpsichord music in 1744, 1748, 1756 and 1768. The last book contained La Pothouin. He was considered by Pascal Taskin, the harpsichord maker, to be one of the best teachers in Paris. Some time after publishing his fourth volume of works, Duphly effectively disappeared from public life, for reasons which are not known.