Porte de Montreuil (French pronunciation: [pɔʁt də mɔ̃tʁœj]) is a station on line 9 of the Paris Métro.

Like that of Porte de Charenton, the train hall boasts an unusually wide vault, at 22.5 m across.

Flea markets are held on the glacis (the sloping bank in front of a wall) of the fortifications.

The station was opened on 10 December 1933 with the extension of the line from Richelieu - Drouot.

An interchange with Paris tramway Line 3b opened on 15 December 2012.