Le Pertre (French pronunciation: [lə pɛʁtʁ]；Gallo: Le Pèrt, Breton: Ar Perzh) is a commune in the Ille-et-Vilaine department of Brittany in northwestern France.

Legend has it that thirty-nine bell towers are visible in good weather from the top of the church.

It is an oak grove which was classified, in 1997, as a natural area of ecological interest, faunistic and floristic.

It has some ornithological interest since thirty-two species of birds are listed there, five of which are uncommon in the region (Honey Buzzard, Common Hawk, Hoopoe, Redstart, and Woodpecker).

Inhabitants of Le Pertre are called in French pertrais.