Gustavo Rubén Lorenzetti Espinosa (born May 10, 1985, in Rosario, Santa Fe Province, Argentina) is an Argentine naturalized Chilean[2] former professional footballer who played as an attacking midfielder.

In 2007, Lorenzetti was loaned again to a Chilean club this time Universidad de Concepción with an option to buy the player at the end of the year.

[4][5] He scored a goal in his official debut in a 3–0 home win over La Serena on 30 July, for the first week of the Clausura Tournament.

[6] In his second official game, against Cobreloa, Lorenzetti scored two goals in the club's 3–1 victory and was named the man of the match.

In April 2023, he announced his retirement from playing, holding the record of assists as a player of Universidad de Chile in the 21st century.