Rochefort (French: [ʁɔʃfɔʁ] ⓘ; Walloon: Rotchfoirt) is a city and municipality of Wallonia located in the province of Namur, Belgium, close to the Ardennes.

The municipality consists of the following districts: Ave-et-Auffe, Buissonville, Éprave, Han-sur-Lesse, Jemelle, Lavaux-Sainte-Anne, Lessive, Mont-Gauthier, Rochefort, Villers-sur-Lesse, and Wavreille.

Its ancient position at the crossroads where the route to Saint-Hubert crossed that from Liège to Bouillon required fortifying: the ruins of the old castle, which gave the place its name and a title to a long line of counts who had the right of coining their own money, still exist.

The Grotto of Rochefort, within the town, contains six chambers, the largest and highest of which was called the Sabbat (Encyclopædia Britannica 1911).

The finest stalactites are in the three halls called the Mysterieuses, the Vigneron and the Draperies where is " the tomb", which looks as if chiseled out of white marble.