TER Provence Alpes-Côte-d'Azur is the regional rail network serving the Provence-Alpes-Côte d'Azur region in France. This network is operated by SNCF. The public transport authority, the Regional Council, runs 800 trains a day, especially near Avignon, Marseille, Toulon and Nice. 100,000 users take regional trains each day.

Provence-Alpes-Côte d'Azur, also known as Région Sud, is one of the eighteen administrative regions of France, the far southeastern on the mainland. Its prefecture and largest city is Marseille.