Frailes is a municipality in the province of Jaén, in the autonomous community of Andalusia, southern Spain. It covers a total area of 41.37 square kilometres and had a population of 1,551 inhabitants in 2024, giving a population density of 43.41 inhabitants per square kilometre.
The town was immortalised by the British writer Michael Jacobs in his 2003 book, The Factory of Light, which is set in Frailes and describes life in the village.