Villacarrillo is a locality and Spanish municipality located in the south-western part of the region of Las Villas, in the province of Jaén. It borders the municipalities of Santisteban del Puerto, Iznatoraf, Villanueva del Arzobispo, Santiago-Pontones, Santo Tomé, Úbeda, and Sabiote. The municipality includes the population centers of Villacarrillo- which hosts the capital of the Las Villas region-, Mogón, La Caleruela, Agrupación de Mogón y Arroturas.