Gustave Lanson (5 August 1857 – 15 December 1934) was a French historian and literary critic. He taught at the Sorbonne and the École Normale Supérieure in Paris. A dominant figure in French literary criticism, he influenced several generations of writers and critics through his teachings, which were anti-systematic and promoted a scrupulous and erudite approach to texts via extensive firsthand research, inventorying, and in-depth historical investigation.[1]