Irueste is a municipality in Spain, located in the province of Guadalajara within the autonomous community of Castile-La Mancha. It is a small rural settlement in the central part of the country.
The municipality is sparsely populated. According to the 2004 census conducted by the Instituto Nacional de Estadística (INE), Irueste had a population of 65 inhabitants, reflecting the pattern of small village communities found across much of this part of Castile-La Mancha.