Alphonse François Marie Guérin (French pronunciation: ​[alfɔ̃s fʁɑ̃swa maʁi ɡeʁɛ̃]; August 9, 1816 – February 21, 1895) was a French surgeon who was a native of Ploërmel. He studied medicine in Paris, and in 1850 became a surgeon of Parisian hospitals. During his career, he practiced surgery at the Lourcine, Cochin, Hôpital Saint-Louis and Hôtel-Dieu. In 1868 he became a member of the French Académie Nationale de Médecine.