François de Tournon (1489 in Tournon-sur-Rhône – 1562 in Saint-Germain-en-Laye) was a French Augustinian monk, an archbishop, diplomat, courtier, and cardinal.
From 1536 he was also a military supply officer of French forces operating in Provence, Savoy and Piedmont.
In the same year he founded the Collège de Tournon.
For a period he was effectively France's foreign minister.
He was a prominent leader in the fight against Lutheranism and Calvinism, especially at the French Royal Court, and what he perceived as the growing Huguenot menace to both doctrinal orthodoxy and the social order.
He took a prominent role in the Estates General of 1560, the Colloquy of Poissy and the Colloquy of Saint-Germain in 1562.
He participated in the papal conclaves of 1534, 1549, and 1559.