Somme-Leuze (French: [sɔm løz]; Walloon: Some-Leuze) is a municipality of Wallonia located in the province of Namur, Belgium.
On 1 January 2006 the municipality had 4,656 inhabitants. The total area is 95.09 km2, giving a population density of 49 inhabitants per km2.
The municipality consists of the following districts: Baillonville, Bonsin (including Chardeneux), Heure-en-Famenne, Hogne, Nettinne, Noiseux, Sinsin, Somme-Leuze, and Waillet.
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