Louis de La Forge (French: [lwi də la fɔʁʒ]; 24 November 1632 – 1666) was a French physician and philosopher who in his Tractatus de mente humana (Traité de l'esprit de l'homme, 1664; in English: "Treatise on the Human Mind") expounded the doctrine of occasionalism.
He was born in La Flèche and died in Saumur. He was a friend of Descartes, and one of the most able interpreters of Cartesianism.