Terni is a city in the southern portion of the region of Umbria, in Central Italy. It is near the border with Lazio. The city is the capital of the province of Terni, located in the plain of the River Nera. It is 104 kilometres northeast of Rome and 81 km south of the regional capital, Perugia.

Umbria is a region of central Italy. It includes Lake Trasimeno and Marmore Falls, and is crossed by the Tiber. It is the only landlocked region on the Apennine Peninsula. The regional capital is Perugia.