Rene-Joseph de Tournemine (26 April 1661, Rennes – 16 May 1739) was a French Jesuit theologian and philosopher. He founded the Memoires de Trevoux, the Jesuit learned journal published from 1701 to 1767, and assailed Nicolas Malebranche with the charges of atheism and Spinozism.
His Reflexions sur l'atheisme originated as a preface to the Traite de l'existence de Dieu (1713) by Fenelon, and was an effective direct attack on Spinoza; it argued that 'Spinozism' wasn't practically tenable.
A debate with Leibniz on the mind-body problem was prominent in the period.
Tournemine taught the young Voltaire, and became a friend. In correspondence from 1735, however, Voltaire was critical of the Jesuit reception of Newton and Locke.