The Complutense University of Madrid (Spanish: Universidad Complutense de Madrid, UCM) is one of the oldest universities in the world and the top public university in Spain. It is located on a sprawling campus that occupies the entirety of the Ciudad Universitaria district of Madrid, with annexes in the district of Somosaguas in the neighbouring city of Pozuelo de Alarcón.
According to the annual university rankings conducted by El Mundo, the Complutense University ranks as the top public university in Spain.