Teruel (Catalan: Terol [təˈɾɔl]) is a province of Aragon, in the northeast of Spain. The capital is Teruel.
It is bordered by the provinces of Tarragona, Castellón, Valencia (including its exclave Rincón de Ademuz), Cuenca, Guadalajara, and Zaragoza. The area of the province is 14,809 km². Its population is 134,572 (2018), of whom about a quarter live in the capital, and its population density is 9.36/km². It contains 236 municipalities, of which more than half are villages of under 200 people. Teruel is the second-least populated province of Spain, and also the second-lowest in population density, in both counts after the province of Soria.