Gian dos Santos Martins (born 2 April 1993), or simply Gian, is a Brazilian professional footballer who plays as a central midfielder for Zhenis in the Kazakhstan Premier League.
On 27 January 2020, FC Okzhetpes announced the signing of Gian on a contract until the end of the 2020 season.
On 21 January 2022, FC Kyzylzhar announced the signing of Gian.