| Attert | |
| Picture-Legend: | Neighbourhood of St. Stephen's Church |
| Map: | Attert Luxembourg Belgium Map.svg |
| Map-Legend: | Location of Attert in Luxembourg province |
| Arms: | Blason commune d'Attert (Belgique).svg |
| Flag: | Attert vlag.svg |
| Arrondissement: | Arlon |
| Nis: | 81003 |
| Mayor: | Joseph Arens |
| Postal-Codes: | 6717 |
| Telephone-Area: | 063 |
| Web: | www.attert.be |
| Coordinates: | 49.75°N 52°W |
Attert (in French pronounced as /atɛʁt/; Luxembourgish; Letzeburgesch: Atert; Walloon: Ater) is a municipality of Wallonia located in the province of Luxembourg, Belgium.
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 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.
Attert is twinned with:[1]
Taktaharkány (Hungary) since 2003
Kruishoutem (Belgium) since 2004
Bakałarzewo (Poland) since 2005