Pierre Dumage (du Mage) (baptized 23 November 1674 – 2 October 1751) was a French Baroque organist and composer. His first music teacher was most likely his father, organist of the Beauvais Cathedral. At some point during his youth Dumage moved to Paris and studied under Louis Marchand. He also befriended Nicolas Lebègue, who in 1703 procured for Dumage a position of organist of the Saint-Quentin collegiate church. In 1710 Dumage was appointed titular organist of the Laon Cathedral. Due to strained relations with his superiors in the cathedral chapter, Dumage left on 30 March 1719, at the age of 45, and became a civil servant. He apparently neither played nor composed music professionally until his death.