Montreuil-le-Henri (French pronunciation: [mɔ̃tʁœj lə ɑ̃ʁi]) is a commune in the Sarthe department in the region of Pays de la Loire in north-western France.

The Château de Montreuil-le-Henri is a Gothic building in the centre of the village, dating back to the 11th century.

In 2010, the village's climate was oceanic, as a study from the CNRS based on data covering the 1971-2000 periode.

Rumors has it that the village is named this way because king Henry IV of France stayed the night.

Phạm Duy Khiêm (1908-1974), Vietnamese writer and ambassador of the Republique of Viêt Nam in France, living in the village where he committed suicide.