Pierre de Chambly (c. 1260 – 18 January 1308), also known as Pierre the Fat (French: Pierre le Gras),[1] Pierre VI de Chambly,[2] or Pierre III de Chambly, was a French noble who served as chamberlain under King Philip IV of France. He was lord of Viarmes, Livry, Presles, Torigny, and (briefly) Tournan.