The Communauté d'agglomération du Beauvaisis is a communauté d'agglomération located in the Oise department and in the Hauts-de-France region of France. Its seat is in the town Beauvais. It was created on 1 January 2017 by merger of the former Communauté d'agglomération du Beauvaisis with the Communauté de communes rurales du Beauvaisis, and was expanded with 9 communes from the Communauté de communes de l'Oise Picarde in January 2018. Its area is 539.0 km2. Its population was 103,934 in 2020, of which 56,889 in Beauvais proper.