The Communauté de communes Cœur d'Ostrevent is a federation of municipalities (communauté de communes) in the Nord département and in the Nord-Pas-de-Calais région of France.

Its seat is Lewarde.

[1] The commune Émerchicourt left the communauté de communes and joined the communauté d'agglomération de la Porte du Hainaut in January 2019.

[2] Its area is 138.2 km2, and its population was 70,431 in 2021.

[3] The communauté de communes consists of the following 20 communes:[1] This Nord geographical article is a stub.