Ariana Governorate (Arabic: ولاية أريانة Wilāyat Aryānah pronounced [ærˈjæːnæ]; French: Gouvernorat de l'Ariana) is one of the twenty-four governorates (provinces) of Tunisia.

It is in northern Tunisia, approximately triangular, having as one of its sides part of the Gulf of Tunis, it covers an area of 482 km2[1] and has a population of 576,088 (2014 census).

The average temperature is 18.7 °C, and annual rainfall is 450 millimeters.

[1] Administratively, the governorate is divided into seven delegations (mutamadiyat), six municipalities, four rural councils, and 42 sectors (imadas).

[1] The delegations and their populations from the 2004 and 2014 censuses,[3] are listed below: The following six municipalities are located in Ariana Governorate: