Juan Carlos Navarro Feijoo was born in Sant Feliu de Llobregat, Barcelona, Spain.

Navarro started playing with the senior men's club of FC Barcelona at the age of 17, making his Spanish ACB League debut on November 23, 1997.

That year he was selected to attend the Nike Hoop Summit, but he opted stayed in Europe, and play for the Barcelona pro team.

Due to his club obligations, he was also not on the Spanish junior national team that won the Albert Schweitzer Tournament, in Mannheim, in 1998.

With the acquisitions of Dejan Bodiroga and Gregor Fučka in 2003, FC Barcelona won all the competitions they played in that year.

In 2006, Juan Carlos Navarro earned the regular season Most Valuable Player award of the Spanish Liga ACB.

A qualifying contract offer, that had been previously tendered to Navarro by the Memphis Grizzlies, was eventually rescinded by the team on September 10, 2009.

[6][7] Navarro's final NBA game was played on April 16, 2008, in a 111–120 loss to the Denver Nuggets where he recorded 16 points, 7 assists, 4 rebounds and 2 steals.

After spending the 2007–08 season in the NBA, with the Memphis Grizzlies, Navarro returned to FC Barcelona in the summer of 2008, on a 4-year €12 million net income contract.

In late December 2014, it was announced that he would miss up to six weeks of action, due to a torn muscle in his right thigh.

[9] On June 29, 2015, it was announced by Barcelona that Navarro would miss three months of game action, due to plantar fasciitis on his right foot.

On August 17, 2018, Navarro retired from competing in active sports competition,[11][12][13] and he joined the FC Barcelona club's head office structure.

[14][15] At the time of his retirement from playing professional basketball, Navarro was the EuroLeague's all-time career leader in total Performance Index Rating (PIR) (that record was eventually broken by Vassilis Spanoulis),[16] and also the league's career leader in total points scored (4,152 points)[1] in the modern EuroLeague Basketball era of the competition, since the year 2000 (that record was also eventually broken by Spanoulis).

[16][18][19] In the summer of 1998, Navarro was a member of the Spanish under-18 junior national team that won the gold medal at the 1998 FIBA Europe Under-18 Championship.

He was also one of "The Golden Generation" boys of Spain (along with Felipe Reyes and future NBA players Pau Gasol and Raúl López) that defeated the United States' junior national team at the 1999 FIBA Under-19 World Cup.

After Navarro retired from playing professional basketball, in August 2018, he began working in the front office of the Spanish Liga ACB club FC Barcelona.