Hastière (French pronunciation: [as.tjɛʁ]; Walloon: Astire) is a municipality of Wallonia located in the province of Namur, Belgium.

On 1 January 2006 the municipality had 5,230 inhabitants. The total area is 56.46 square kilometres (21.8 sq mi), giving a population density of 93 inhabitants per square kilometre.

The municipality consists of the following districts: Agimont, Blaimont, Hastière-Lavaux (location of town hall), Hastière-par-delà, Heer, Hermeton-sur-Meuse, and Waulsort.

Hastière's attractions along the river Meuse include the Romanesque Abbey Church of Saint Peter, a former Benedictine monastery (at Hastière-Lavaux), the Renaissance Castle of Freÿr surrounded by 18th-century classical gardens and facing the rocks of Freÿr (north of Waulsort), and the 17th-century buildings of another former Benedictine monastery (at Waulsort).

• List of protected heritage sites in Hastière

• Media related to Hastière at Wikimedia Commons
• http://www.hastiere.be
• map