Mettet is a municipality located in the Belgian province of Namur. On January 1st, 2004 Mettet had a total population of 11,709 (5,770 males and 5,939 females). The total area is 116.78 kmē which gives a population density of 100.26 inhabitants per kmē.
The municipality of Mettet (12,037 inhabitants on 1 July 2007; 11,678 ha) is located 25 km south-south-west of Namur, in the region of Entre-Sambre-et-Meuse.
The motorbike circuit of Mettet, of international fame, is named after Jules Tacheny (1907-1984), one of the founders of the "Royal Union Motor de l'Entre Sambre et Meuse" and most famous Belgian motobiker ever.
The municipal flag of Mettet is quartered by a white cross green and green with a white border.