Gustavo Mantuan (born 20 June 2001) is a Brazilian professional footballer who plays as a midfielder for Russian club Zenit Saint Petersburg.

Mantuan started his career when he was six years old at Corinthians' youth squad, playing futsal until age 13, before changing full time to the football team.

[1] He made his professional debut for Corinthians in a 2020 Campeonato Brasileiro Série A away match against Sport Recife on 24 September 2020.

[2] On 29 June 2022, Russian champions FC Zenit Saint Petersburg announced an agreement with Corinthians under which Mantuan and Ivan would move on loan to Zenit and Yuri Alberto would be loaned in the opposite direction.

[4] On 23 June 2023, Zenit made the transfer permanent and signed a four-year contract with Mantuan, with an optional fifth year.