Libros is a municipality in the province of Teruel, in the autonomous community of Aragon, Spain. It is a small, sparsely populated settlement located within this landlocked region of northeastern Spain.
The municipality is notable for its very small population. According to the 2004 census carried out by the Instituto Nacional de Estadística (INE), Libros had a population of 150 inhabitants. This figure reflects the pattern of low population density typical of many rural municipalities in the Teruel province.
As a municipality, Libros forms part of the local administrative structure of Aragon, with the town of Teruel serving as the provincial capital.