La Bosse-de-Bretagne (; ; Gallo: La Bocz) is a commune in the Ille-et-Vilaine department in Brittany in northwestern France. Geography The river Semnon forms most of the commune's southern border. Population Inhabitants of La Bosse-de-Bretagne are called Bosséens in French. See also Communes of the Ille-et-Vilaine department References External links Mayors of Ille-et-Vilaine Association Communes of Ille-et-Vilaine