Mário Sérgio Aumarante Santana (born 30 January 1977 in Adustina, Brazil), known as just Mário Sérgio, Brazilian footballer who plays as a midfielder, his last known club was Simurq of the Azerbaijan Premier League.
Mário Sérgio joined Khazar Lankaran on 10 January 2008 from Brazilian side Portuguesa, and was the club's top goal scorer during the 2009âÂÂ10 season with 13 in 28 games.