Jean Desfontaines (c. 1658 – after 1752) was a French Baroque composer.
Desfontaines was a pupil of Monsieur de Sainte-Colombe.
He was a prolific music teacher in Paris, however, it does not seem that he held a public office.
His output includes airs, the cantata Narcisse, the pastorale Le Désespoir de Tircis and sacred music, which consists of 192 works numbered JeD.
He wrote music on all 150 psalms, a magnificat Anima mea and 41 petits motets on liturgical texts of Neo-Latin poetry.