Viroinval (French pronunciation: [viʁwɛ̃val]; Walloon: Virwinvå) is a municipality of Wallonia located in the province of Namur, Belgium.

On January 1, 2006, Viroinval had a total population of 5,680. The total area is 120.90 km which gives a population density of 47 inhabitants per km.

The municipality consists of the following districts: Dourbes, Mazée, Le Mesnil, Nismes, Oignies-en-Thiérache, Olloy-sur-Viroin, Treignes, Vierves-sur-Viroin.

The name Viroinval, Viroin (River) Valley, was chosen for the municipality that was formed by fusing eight villages, in 1977.

• 
  Dourbes
• 
  Nismes
• 
  Olloy-sur-Viroin
• 
  Treignes
• 
  Vierves-sur-Viroin

• From 1995 to 2004, Viroinval was the location of the geographical centre of the European Union, at coordinates 50°00′33″N 4°39′59″E / 50.00917°N 4.66639°E / 50.00917; 4.66639 (Geographical centre of the European Union (15 members)) in Oignies-en-Thiérache, and a monument there records that finding. On May 1, 2004, the EU expanded from fifteen states to twenty-five, and the geographical centre of the union moved eastwards to the village of Kleinmaischeid, Rhineland-Palatinate, Germany. On 1 January 2007 it shifted even further south-eastwards.
• The tourist steam train line Mariembourg–Treignes has most of its stations in villages of Viroinval: Nismes, Olloy-sur-Viroin, Vierves-sur-Viroin, and Treignes. The latter village has a relevant museum.

• Official Website of the municipality
• The former Centre of the European Union
• Awarded "EDEN - European Destinations of Excellence" non traditional tourist destination 2009