Belsunce (French pronunciation: [bɛlzœ̃s], locally [belˈzœ̃sə]; Basque: Beltzuntze) is a district near Canebière, central Marseille. Its name was given by Monseigneur Henri François Xavier de Belsunce de Castelmoron, who famously helped during the Great Plague of Marseille.

Belsunce is a popular area from the "Centre Bourse" to the big shopping crentre of central Marseille. It includes the famous Alcazar, an old theatre that has been converted into a library.