Campobasso is a city and comune in southern Italy, the capital of the region of Molise and of the province of Campobasso. It is located in the high basin of the Biferno river, surrounded by Sannio and Matese mountains.

Molise is a region of Southern Italy. Until 1963, it formed part of the region of Abruzzi e Molise together with Abruzzo. The split, which did not become effective until 1970, makes Molise the newest region in Italy. Covering 4,438 square kilometres (1,714 sq mi), it is the second smallest region in the country, after the Aosta Valley, and has a population of 313,348.