Nassogne () is a municipality of Wallonia located in the province of Luxembourg, Belgium.
On 1 January 2007 the municipality, which covers 111.96 km<sup>2</sup>, had 5,045 inhabitants, giving a population density of 45.1 inhabitants per km<sup>2</sup>.
The municipality consists of the following districts: Ambly, Bande, Forrières, Grune, Harsin, Lesterny, Masbourg (including Mormont), and Nassogne.
The "monument aux morts de Nassogne" is a World War I memorial sculpture in Nassogne, made by artist Mercédès Legrand.