Estinnes (French pronunciation: [ɛstin] ⓘ; Picard: L' Estene) is a municipality of Wallonia located in the province of Hainaut, Belgium.

The total area is 72.73 km2 which gives a population density of 102 inhabitants per km2.

The municipality consists of the following districts: Croix-lez-Rouveroy, Estinnes-au-Mont, Estinnes-au-Val, Faurœulx, Haulchin, Peissant, Rouveroy, Vellereille-les-Brayeux, and Vellereille-le-Sec.

Estinnes was the location, on 1 March 744, of the second reform council organized by Saint Boniface.

This Hainaut Province location article is a stub.