Mettet (French pronunciation: [mɛ.tɛ]; Walloon: Metet) is a municipality of Wallonia located in the province of Namur, Belgium.

On 1 January 2006 Mettet had 11,977 inhabitants. The total area is 116.78 km², giving a population density of 103 inhabitants per km².

The municipality consists of the following districts: Biesme, Biesmerée, Ermeton-sur-Biert, Furnaux, Graux, Mettet, Oret, Saint-Gérard, and Stave.

In Mettet there is a race track, Circuit Jules Tacheny Mettet, for motorbikes and cars.

• Alain Crépin (1954–), conductor and musician

• List of protected heritage sites in Mettet

• 
  St. John the Baptist church
• 
  Baptismal font of Furnaux

• Media related to Mettet at Wikimedia Commons
• Official website (in French)
• Official website of race track "Jules Tacheny" (in French and Dutch)
• Motorbike Race Circuit "Jules Tacheny" (in French)
• Mettet d'autrefois, Site of old postcards and old photographs of Mettet. Collection of PIERRE HUBOT