Auvergne-Rhône-Alpes (ARA; French: [ovɛʁɲ ʁon‿alp] (listen); Arpitan: Ôvèrgne-Rôno-Ârpes; Occitan: Auvèrnhe Ròse Aups; Italian: Alvernia-Rodano-Alpi) is a region in southeast-central France created by the 2014 territorial reform of French regions; it resulted from the merger of Auvergne and Rhône-Alpes. The new region came into effect on 1 January 2016, after the regional elections in December 2015.The region covers an area of 69,711 km2 (26,916 sq mi), making it the third largest in metropolitan France; it had a population of 7,948,287 in 2017, second to Île-de-France. It consists of twelve departments and one territorial collectivity (Lyon Metropolis) with Lyon as the prefecture.
This new region combines diverse geographical, sociological, economic and cultural regions, which was already true of Rhône-Alpes, as well as Auvergne, to a lesser extent. While the old Rhône-Alpes and Auvergne regions each enjoyed a unity defined by axes of communication and the pull of their respective metropoles, the new combination is heterogeneous; it sustained lively opposition from some local officials after its creation.