Argentré-du-Plessis (French pronunciation: [aʁʒɑ̃tʁe dy plɛsi]; Breton: Argantred-ar-Genkiz; Gallo: Arjantrae) is a commune in the Ille-et-Vilaine department in Brittany in northwestern France.

Inhabitants of Argentré-du-Plessis are called Argentréens in French.

The Château du Plessis is a local chateau with some vestiges of 16th-century construction, although it was largely rebuilt in the 19th century.

The archaeological excavation at Bois du Pinel has uncovered fortifications dating from the 11th century, including a moat, two courtyards, and two enclosures.

This Ille-et-Vilaine geographical article is a stub.