Momignies (French pronunciation: [mɔmiɲi]; Picard: Momgniye) is a municipality of Wallonia located in the province of Hainaut, Belgium.

The municipality consists of the following districts: Beauwelz, Forge-Philippe, Macon, Macquenoise, Momignies, Monceau-Imbrechies, and Seloignes.

Momignies is notable for encompassing the only area in Belgium which is not drained into the North Sea.

It is drained by the Oise river into the English Channel.

This Hainaut Province location article is a stub.