Monsignor François Ducaud-Bourget (November 24, 1897 - June 12, 1984) was a prominent traditionalist Roman Catholic French prelate, priest and close ally of Archbishop Marcel Lefebvre.
During World War II he was active in the French Resistance as a priest, and helped Jews to escape to Spain.
[1] He had been made a chaplain of the Order of Malta in 1946 and an honorary prelate in the time of Pope Pius XII.
[2] Rejecting the revision of the Roman Missal that followed the Second Vatican Council, he organised celebration of the Latin Tridentine Mass in the chapel of the Hôpital Laënnec, a former hospital in Paris.
When he was excluded from this in 1971, he tried in vain to obtain from the Cardinal Archbishop of Paris François Marty another place in which only the Tridentine Mass would be celebrated.