Forcalquier (French: [fɔʁkalkje]; Provençal: Forcauquier [fuʀkɔwˈkje]) is a commune in the Alpes-de-Haute-Provence department in southeastern France.

Rivalry ended in 1195 when Gersende de Sabran, countess of Forcalquier, married Alfonso II, count of Provence.

Forcalquier is built around the slopes of a steep conical hill, crowned by an octagonal chapel, Notre Dame de Provence, where the medieval citadel once stood.

The 12th century "concathedral" Notre Dame de l'Assomption with its bell towers stands across from the Place du Bourguet.

Noteworthy is the Musée Municipal with its prehistoric and Gallo-Roman artifacts, glass works, and faïence pottery from Mane, Apt and Moustiers-Sainte-Marie.