Provence-Alpes-Côte d'Azur (French pronunciation: ​[pʁɔvɑ̃s‿alp kot d‿azyʁ]; Occitan: Provença-Aups-Còsta d'Azur, [pɾuˈvɛnso̞ ˈawps ˈkɔsto̞ daˈzyɾ], or Provença-Alps-Còsta d'Azur, [pɾuˈvɛnso̞ ˈalps ˈkɔsto̞ daˈzyɾ]; commonly shortened to PACA; English: Provence-Alps-French Riviera; 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. The region is roughly coterminous with the former French province of Provence, with the addition of the following adjacent areas: the former papal territory of Avignon, known as Comtat Venaissin; the former Sardinian-Piedmontese County of Nice, whose coastline is known in English as the French Riviera and in French as the Côte d'Azur; and the southeastern part of the former French province of Dauphiné, in the French Alps. Previously known by the acronym PACA, the region adopted the name Région Sud as a commercial name or nickname in December 2017. 5,007,977 people live in the region according to the 2015 census.
It encompasses six departments in Southeastern France: Alpes-de-Haute-Provence, Alpes-Maritimes, Bouches-du-Rhône, Hautes-Alpes, Var and Vaucluse. It is bounded to the east by the France–Italy border, to the south by the Mediterranean Sea and by the Principality of Monaco, to the north by Auvergne-Rhône-Alpes and to the west by Occitanie, with the Rhône marking its westernmost border. The region logotype displays the coat of arms created in the 1990s and which combines the coats of arms of the old provinces making up Provence-Alpes-Côte d'Azur. The region's economy is the third largest in France, just behind Île-de-France and Auvergne-Rhône-Alpes. Its GDP in 2012 was €142.4 billion (US$183.1 billion) while its per capita GDP was €28,861 ($US 37,121).