Communauté d'agglomération Grand-Poitiers is the communauté d'agglomération, an intercommunal structure, centred on the city of Poitiers. It is located in the Vienne department, in the Nouvelle-Aquitaine region, western France. It was created in January 2017. Its population was 195,044 in 2014, of which 90,115 in Poitiers proper.
The communauté d'agglomération consists of the following 40 communes: