Jayena is a municipality in the province of Granada, in the autonomous community of Andalusia, southern Spain. It is one of the many small towns that make up the rural interior of the province, situated within the comarca of the Alhama region.
According to the 2005 census conducted by Spain's National Statistics Institute (INE), Jayena had a population of 1,237 inhabitants. The municipality covers a sparsely populated area typical of Granada's inland villages, where populations are generally small and dispersed.
Like other municipalities in the province of Granada, Jayena is governed as a local administrative unit within Spain's system of municipal government. Its location in Andalusia places it within one of Spain's largest autonomous communities, a region known for its varied landscapes and historic towns.