Attert (Atert in Luxembourgish, Ater in Walloon) is a Walloon municipality of Belgium located in the province of Luxembourg. On 1 January 2007 the municipality, which covers 70.94 km², had 4,802 inhabitants, giving a population density of 67.7 inhabitants per km².
The municipality consists of the following sub-municipalities: Attert proper, Nobressart, Nothomb, Thiaumont, and Tontelange. Other population centers include:
The municipality falls within the Luxembourgish-speaking Arelerland and several street name signs are bilingual.
Attert is twinned with:
- Media related to Attert at Wikimedia Commons