The Montpellier Codex (Montpellier, Bibliothèque Inter-Universitaire, Section Médecine, H196) is an important source of 13th-century French polyphony. The Codex contains 336 polyphonic works probably composed c. 1250–1300, and was likely compiled c. 1300. It is believed to originate from Paris. It was discovered by musicologist Edmond de Coussemaker in c. 1852.