| Mettet | |
| Picture-Legend: | Mettet town hall |
| Map: | Mettet Namur Belgium Map.svg |
| Map-Legend: | Location of Mettet in Namur Province |
| Arms: | Blason village be Mettet.svg |
| Flag: | Mettet Belgium.svg |
| Arrondissement: | Namur |
| Nis: | 92087 |
| Mayor: | Yves Delforge |
| Majority: | ICAP-Oxygène-ROPS |
| Postal-Codes: | 5640, 5641, 5644, 5646 |
| Telephone-Area: | 071 |
| Web: | www.mettet.be |
| Coordinates: | 50.3167°N 44°W |
Mettet (in French pronounced as /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.