Farciennes (French pronunciation: [faʁsjɛn]; Walloon: Fårcene) is a municipality of Wallonia located in the province of Hainaut, Belgium.

The municipality consists of the following districts: Farciennes and Pironchamps.

The boroughs of Wainage, Wairchat and Tergnée are part of the district of Farciennes.

It declined with the closure of the last Walloon coal mine, namely the Sainte-Catherine shaft of the Roton company, and the fall of the iron and steel industries, formerly large employers in the area between Liège and Charleroi.

Today, the site of Roton, of which only the tower and the cloakroom remain, has been developed to accommodate small and medium-sized businesses.