Gallican theologian. The first volumes of his vast Nouvelle Bibliothèque des Auteurs Ecclésiastiques (some 60 vols., 1686–1719) aroused opposition; Dupin was censured by the Abp. of Paris (1693) but continued writing the Bibliothèque, which was put on the Index only in 1757. He took part in a project for union between the Russian and French Churches in 1717, and in 1718 he entered into correspondence with W. Wake, Abp. of Canterbury, in an equally unsuccessful attempt to achieve union between the Churches of England and France.