Liga Deportiva Universitaria (Spanish pronunciation: [ˈliɣa ðepoɾˈtiβawniβeɾsiˈtaɾja]) is an Ecuadorian professional football club based in Quito. They play in the Serie A, the highest level of the Ecuadorian professional football league. They play their home games at the Estadio Rodrigo Paz Delgado, more commonly referred to as Casa Blanca. Rival clubs include Quito-based clubs El Nacional, Deportivo Quito, Aucas and Universidad Católica.

Liga Deportiva Universitaria has its roots in the semi-pro sports teams in 1918 competing as \"Universitario\" at the Central University of Ecuador, and was officially founded on 11 January 1930. They began making an impact in the provincial leagues, winning nine Pichincha titles (six in the professional era). Their provincial success continued into the national league, where they have won 13 national title (4th overall) having won their most recent title in 2024. They are the most successful Ecuadorian club in international competitions, where they were the first Ecuadorian club to win the Copa Libertadores (2008), the Copa Sudamericana (2009 and 2023), and the Recopa Sudamericana (2009 and 2010). They are one of only six teams —Boca Juniors, Independiente, River Plate, Internacional and São Paulo being the other five— to have achieved the CONMEBOL treble, winning all three continental club tournaments. LDU is the only team to win all three mentioned cups one after another between the years 2008 to 2010 causing them to be rated as the best South American team of 2008 and 2009. Liga de Quito was additionally the runner-up at the 2008 FIFA Club World Cup.