Alcubierre is a municipality in the province of Huesca, in the autonomous community of Aragon, Spain. It is located in the Monegros comarca of northern Aragon.
According to the 2004 census conducted by the Instituto Nacional de Estadística (INE), the municipality had a population of 439 inhabitants. Like many small municipalities in the sparsely populated Monegros area, Alcubierre covers a relatively large rural territory with a modest and dispersed population.