Narbonne (; Occitan: Narbona, ; ) is a commune in southern France in the Languedoc-Roussillon region. It lies from Paris in the Aude department, of which it is a sub-prefecture. Once a prosperous port, and a major city in Roman times, it is now located about from the shores of the Mediterranean Sea. It is marginally the largest commune in Aude, although the prefecture is the slightly smaller commune of Carcassonne.