Cornet, Nicolas a French theologian, was born at Amiens in 1592. He was educated in his native city at a Jesuit school, made doctor of theology at Paris in 1626, and afterwards became grand-master of the College of Navarre, and syndic of the faculty of theology. He refused to be the confessor of Richelieu, but corrected the Methodes de Controverse of that minister, and, it is said, composed the preface. He denounced to the faculty of theology seven propositions, five of which were afterwards condemned at Rome as extracts from the Augustinus of Jansenius. This orthodox zeal exposed Cornet to the attacks of the writers of Port Royal. He died at Paris, April 12, 1663. See Hoefer, Nouv. Biog. Generale, s.v.; Biog. Universelle, s.v.