Andenne (French pronunciation: [ɑ̃.dɛn] ⓘ; Walloon: Andene) is a city and municipality of Wallonia located in the province of Namur, Belgium.

The municipality, and the central city, extend on both sides of the river Meuse.

The municipality consists of the following districts: Andenne, Bonneville, Coutisse, Landenne, Maizeret, Namêche, Sclayn, Seilles, Thon-Samson, and Vezin.

The city is symbolized by a bear, originating from the legend that saw Charles Martel, while still a child, use a hammer to kill a bear that terrorized the inhabitants.

The Collegiate Church of Saint Begga, located in Andenne, was founded in the 7th century.