Guido Hernán Pizarro Demestri (born 26 February 1990) is an Argentine professional footballer who plays as a defensive midfielder for Liga MX club Tigres UANL.

He spent a year with the club and made 40 appearances across all competitions, including 24 in La Liga.

On 7 June 2018, Pizarro rejoined Tigres UANL in a deal reported to be worth around €8.4 million.

In May 2018, he was named in Argentina's preliminary 35 man squad for the 2018 World Cup in Russia [3] but did not make the final 23.

This biographical article related to an Argentine association football midfielder born in the 1990s is a stub.