Bernard Lamy (15 June 1640 – 29 January 1715) was a French Oratorian, mathematician and theologian.

After teaching a few years at Le Mans he was appointed to a chair of philosophy in the University of Angers.

Here his teaching was attacked on the ground that it was too exclusively Cartesian, and Rebous the rector obtained in 1675 from the state authorities a decree forbidding him to continue his lectures.

He was then sent by his superiors to Grenoble, where, thanks to the protection of Étienne Le Camus, he again took up his courses of philosophy.

In 1686 he returned to Paris, stopping at the seminary of Saint Magloire, and in 1689 he was sent to Rouen, where he spent the remainder of his days to his death in 1715.