Ricardo Izecson dos Santos Leite (Portuguese pronunciation: [ʁiˈkaɾdu iˈzɛksõw duˈsɐ̃tus ˈlejt͡ʃi]; born 22 April 1982), commonly known as Kaká  or Ricardo Kaká,is a Brazilian professional footballer who plays for São Paulo FC, on loan from Orlando City, as an attacking midfielder.

Kaká started his footballing career at the age of eight, when he began playing for a local club. At the time, he also played tennis, and it was not until he moved on to São Paulo FC and signed his first professional contract with the club at the age of 15 that he chose to focus on football.

In 2003 he joined Milan for a fee of €8.5 million. While at Milan, Kaká won aSerie A title and the UEFA Champions League, and in 2007 he received theFIFA World Player of the Year and Ballon d'Or awards. After his success with Milan, Kaká joined Real Madrid for a transfer fee of €65 million. At the time, this was the second highest transfer fee (in euros) ever, behind only the €75 million fee for Zinedine Zidane. After four seasons in Spain, he returned to Milan in 2013. He made his debut for the Brazil national team in 2002, and was selected for their victorious World Cup squad that year, as well as the 2006 and 2010 tournaments.

In addition to his contributions on the pitch, Kaká is known for his humanitarian work. In 2004, by the time of his appointment, he became the youngest ambassador of the UN World Food Programme. For his contributions on and off the pitch, Kaká was named in the Time 100 list of the world's most influential people in 2008 and 2009.^[10] Kaká was the first sportsperson to amass 10 million followers on Twitter.