Antoine Geoffroy-Dechaume (7 October 1905, Paris – 15 April 2000) was a French musicologist, organist and harpsichordist. As a musicologist he was considered "the leading French pioneer in the field of early music, both in the way it should be performed and in respect for the original scores of 16th, 17th and 18th century composers." His research and writings, especially his book The Secrets of Early Music, or the search for its interpretation (1964), is credited as the catalyst for the revived interest in French baroque music by the classical music world during the 1970s. He was named a Chevalier of the Légion d'honneur by the government of France.