Lagny-sur-Marne
commune in Seine-et-Marne, France
Lagny-sur-Marne is a commune. It is in Île-de-France in the Seine-et-Marne department in north-central France. In 2019, 21,539 people lived there.
The commune is in the eastern suburbs of Paris, 26.1 km (16.2 mi) from the center.
Football player Paul Pogba was born here.