Pleumeleuc (French pronunciation: [plœmlœk]; Breton: Pleveleg; Gallo: Ploemenoec) is a commune in the department of Ille-et-Vilaine in Brittany in the northwest of France.

Pleumeleuc was a former early parish which included the towns of Bédée, Breteil, Clayes, Le Lou-du-Lac and La Nouaye.

In 1218, Raoul, bishop of Saint-Malo, made it know that the abbot of Saint-Melaine had introduced him to the clierc Pierre de Tinténiac to be in charge of the church of Pleumeleuc.

Pierre de Tinténiac, reserving all the rights on the taxes of the parish for himself, the bishop said that he had entrusted him the souls and had left him the place in the church.

However, in 1630, the Duke of Trémoille sold the church and so the rights on the monument to François Glé, Lord of La Besneraye.