King Juan Carlos University (Spanish: Universidad Rey Juan Carlos, URJC) is a Spanish public research university located in the southern area of the Community of Madrid (Spain), with five campuses at Móstoles, Alcorcón, Vicálvaro, Aranjuez and Fuenlabrada.
With 44.916 students, it is the second-biggest public university in the Community of Madrid, behind the historical Universidad Complutense. URJC is one of eight universities in the Community of Madrid, and it is the second-newest university in the community.