Terni

Terni
Comune
Comune di Terni
From top left, anti-clockwise: view of Terni; City Council Hall; Terni Cathedral; Relics of Saint Valentine; Piazza Tacito; and Marmore Waterfalls. In the middle: Anfiteatro Fausto.
Flag Coat of arms
Terni Location of Terni in Italy Terni Terni (Umbria)
Coordinates: 42°33′43″N 12°38′29″E
Country	Italy
Region	Umbria
Province	Terni (TR)
Frazioni	Acquapalombo, Appecano, Battiferro, Cecalocco, Cesi, Collegiacone, Collescipoli, Collestatte, Giuncano Alto, Giuncano Scalo, Marmore, Miranda, Papigno, Piediluco, Poggio Lavarino, Polenaco, Porzano, Pracchia, Rocca San Zenone, San Carlo, San Liberatore, Titurano, Torreorsina
Government
• Mayor	Stefano Bandecchi
Area
• Total	212.43 km2 (82.02 sq mi)
Elevation	130 m (430 ft)
Population  (2026)
• Total	106,272
• Density	500.27/km2 (1,295.7/sq mi)
Demonym	Ternani
Time zone	UTC+1 (CET)
• Summer (DST)	UTC+2 (CEST)
Patron saint	Saint Valentine
Saint day	February 14
Website	Official website

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Terni (/ˈtɛərni/ TAIR-nee; Italian: [ˈtɛrni] ^ⓘ; Latin: Interamna (Nahars)) 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 (65 miles) northeast of Rome and 81 kilometres (50 mi) south of the regional capital, Perugia. With a population of 106,272, it is the 42nd-largest city in Italy.

The Latin name means "between-two-rivers", in reference to its location on the confluence of the Nera river (Ancient Umbrian Nahar, Latin: Nār, Nahar) and the Serra stream. When disambiguation was needed, it was referred to as Interamna Nahars. Its inhabitants were known in Latin as Interamnātēs Na(ha)rtēs.

Interamna was founded as an Ancient Roman town, although there were earlier settlements in the Terni area. During the 19th century, steel mills were introduced and led the city to have a role in the Second Industrial Revolution in Italy. Because of its industrial importance, the city was heavily bombed during World War II by the Allies. It remains an industrial hub and has been nicknamed "The Steel City".

Terni is also known as the "City of Lovers", as its patron saint, Saint Valentine, was born and became a bishop here, and his remains are preserved in the basilica-sanctuary.