Cristóbal Alonso Castillo Espinaza (born 4 February 2003) is a Chilean professional footballer who plays as a midfielder for Chilean Primera División side O'Higgins.

He became the team captain of the under-13 level, winning the 2016 Youth Football National Championship.

[1] He made his professional debut in the 2021 Primera División match against Everton de Viña del Mar on March 27.

[6] In September 2022, he made 3 appearances in the Costa Cálida Supercup.

This biographical article related to a Chilean association football midfielder is a stub.