Attert (; ; ) is a municipality of Wallonia located in the province of Luxembourg, Belgium.
On 1 January 2007 the municipality, which covers 70.94 km<sup>2</sup>, had 4,802 inhabitants, giving a population density of 67.7 inhabitants per km<sup>2</sup>.
The municipality consists of the following districts: Attert, Nobressart, Nothomb, Thiaumont, and Tontelange.
Other population centers include:
The municipality falls within the Luxembourgish-speaking Arelerland and several street name signs are bilingual.
Sister cities
Attert is twinned with:
- Taktaharkány (Hungary) since 2003
- Kruishoutem (Belgium) since 2004
- Bakałarzewo (Poland) since 2005
- Bandundu, Democratic Republic of the Congo)
See also
- List of protected heritage sites in Attert