Hijes is a municipality in the province of Guadalajara, within the autonomous community of Castile-La Mancha, Spain. It is a small rural settlement in the sparsely populated interior of the country.
The municipality is notable for its very small population. According to the 2023 census published by Spain's National Statistics Institute (INE), Hijes had a population of 20 inhabitants, making it one of the least populated municipalities in the province of Guadalajara.