The Communauté urbaine du Grand Reims is the communauté urbaine, an intercommunal structure, centred on the city of Reims.

It is located in the Marne department, in the Grand Est region, northeastern France.

It was created on 1 January 2017 by the merger of the previous communauté d'agglomération Reims Métropole with the communautés de communes Beine-Bourgogne, Champagne Vesle, Nord Champenois, Fismes Ardre et Vesle, Vallée de la Suippe, Rives de la Suippe, Vesle et Coteaux de la Montagne de Reims and 18 other communes.

[2] The communauté urbaine consists of the following 143 communes:[3][4] The communauté urbaine is led by an indirectly elected President along with a bureau communautaire composed of 15 Vice-Presidents and 44 additional elected members.

The number of council seats each commune receives is proportional based upon their population as follows:[5] The administrative seat of the communauté urbaine is located in Reims at 3 Rue Eugène-Desteuque.