Fontenay-Trésigny () is a commune in the Seine-et-Marne department in the ÃÂle-de-France region in north-central France.
Fontenay-Trésigny is located 43 km southeast of Paris, 24 km northeast of Melun, 28 km south of Meaux and 36 km northwest of Provins.
Fontenay-Trésigny lies in the heart of the Brie, in a strategic position in the center of the department of Seine-et-Marne.
Inhabitants of Fontenay-Trésigny are called Trésifontains in French.