Giancarlo "Pipo" Gonzalez Castro is a Costa Rican professional footballer who plays as a centre-back for Italian club Bologna and the Costa Rica national team.

After his performances at the 2014 FIFA World Cup, Gonzalez received interest from a number of European clubs, and on 26 August 2014 Palermo of Italy's Serie A confirmed to have signed him on a three-year deal. He made his debut on 19 October 2014 in a home game against Cesena, playing the full 90 minutes and scoring the winning goal in the first minute of injury time. Palermo's 2016–17 season ended with relegation from Serie A with Gonzalez making 21 appearances. On 22 June 2017, Bologna announced the signing of Gonzalez.

Gonzalez made his senior international debut for Costa Rica in a friendly against Slovakia on 5 June 2010. In January 2013, he scored the lone goal in a 1–0 victory over Honduras in the 2013 Copa Centroamericana final. In June 2014, Gonzalez was named in Costa Rica's squad for the 2014 FIFA World Cup. Gonzalez's play at the back was listed by several as key to the team's progression from the group stage. His countless interceptions and tackles led to him being named to the ESPN Best XI of the group stage. He was included in the BBC's team of the tournament.