Real Madrid Club de Fútbol (Royal Madrid Football Club), commonly known as Real Madrid, or simply as Real, is a professional football club based in Madrid, Spain. Founded in 1902 as Madrid Football Club, the team has traditionally worn a white home kit since. The word real is Spanish for royal and was bestowed to the club by King Alfonso XIII in 1920 together with the royal crown in the emblem. The team has played its home matches in the 81,044-capacity Santiago Bernabéu Stadium in downtown Madrid since 1947. Unlike most European football clubs, Real Madrid's members (socios) have owned and operated the club since its inception. The club is the world's richest football club in terms of revenue, with an annual turnover of €604 million, and the world's most valuable sports team, worth €2.5 billion ($3.4 billion). The club is one of the most widely supported teams in the world. Real Madrid is one of three founding members of the Primera División which have never been relegated from the top division, along with Athletic Bilbao and Barcelona. The club holds many long-standing rivalries, most notably El Clásico with Barcelona and the Madrid derby with Atlético Madrid. Real Madrid is the joint most successful club in Spain, in terms of overall official titles won (80), and the joint most successful club in European competitions, in terms of official European trophies won (17). The club established itself as a major force in both Spanish and European football during the 1950s. Domestically, Real Madrid has won a record 32 La Liga titles, 19 Copa del Rey, 9 Supercopa de España, 1 Copa Eva Duarte and 1 Copa de la Liga. Internationally the club has won a record 10 European Cup/UEFA Champions League titles and a joint record 3 Intercontinental Cups, as well as 2 UEFA Cups, 2 UEFA Super Cups and a FIFA Club World Cup. Real Madrid was recognised as the FIFA Club of the 20th Century on 23 December 2000, and named Best European Club of the 20th Century by the IFFHS on 11 May 2010. The club also received the FIFA Order of Merit in 2004. The club is allowed to wear a multiple–winner badge on their shirt during UEFA Champions League matches as they have won more than five European Cups. They also wear a FIFA Club World Cup champions badge as winners of the 2014 competition. Currently, the football club leads the UEFA club rankings.

Real Madrid Baloncesto is a Spanish professional basketball team founded in 1931 as a division of the Real Madrid club. They play in the Liga ACB and internationally in the Euroleague. As successful as the football club, the basketball team has been the most successful of its peers in both Spain and Europe. The Real Madrid squads have won a record 31 Spanish League championships, including 7-in-a-row and 10-in-a-row sequences. They have also won a record 24 Spanish Cup championships, a record 8 Euroleague Championships, and a record 4 Saporta Cups. Real has won a record 4 Intercontinental Cups and they have also won 2 Triple Crowns. Star players have included: Arvydas Sabonis, Dražen Petrović, Mirza Delibašić, Juan Antonio Corbalán, Fernando Martín and Dejan Bodiroga. Real Madrid also has a developmental basketball team that plays in Liga EBA (Real Madrid B).