Montreuil (French pronunciation: [mɔ̃tʁœj] ⓘ), also known unofficially as Montreuil-sous-Bois (pronounced [mɔ̃tʁœj su bwa]), is a commune in the eastern suburbs of Paris, France.

It is located north of Paris's Bois de Vincennes (in the 12th arrondissement), on the border with Val-de-Marne.

The name Montreuil was recorded for the first time in a royal edict of 722 as Monasteriolum, meaning "little monastery" in Medieval Latin.

A small monastery was recorded on the site during the Merovingian period on a hill that overlooked Vincennes, which is most likely where Montreuil gained its name.

It was also later home to the Lumière brothers and George Méliès whose workshops were located in lower Montreuil.

On that occasion, the commune of Charonne was disbanded and divided between the city of Paris, Montreuil, and Bagnolet.

The region is also working on the extension of the Métro Line 1 to Val-de-Fontenay, with a possible new station in the East of Montreuil (Grands Pêchers).

[27] Montreuil is twinned with Cottbus, Brandenburg, Germany[28] and a few other towns and cities of Africa, Asia and Europe.