The Directorium ad faciendum passagium transmarinum is an anonymous 24,000-word Latin treatise on crusading submitted to King Philip VI of France on 26 July 1330 or 1332. The treatise proposes the conquest of the Holy Land, the Byzantine Empire and Russia and their subjection to the Catholic Church; outlines how this might be achieved; and describes how the conquered territories could be administered.

Jean de Vignay (c. 1282/1285 – c. 1350) was a French monk and translator. He translated from Latin into Old French for the French court, and his works survive in many illuminated manuscripts. They include two military manuals, a book on chess, parts of the New Testament, a travelogue and a chronicle.