Thaís Duarte Guedes (born 20 January 1993), commonly known as Thaís Guedes or Thaisinha, is a Brazilian footballer who plays as either a forward or an attacking midfielder for Santos and the Brazil national team. With Brazil's youth teams she competed at the 2008 and 2010 editions of the FIFA U-17 Women's World Cup, as well as the 2012 FIFA U-20 Women's World Cup. At senior international level she played at the 2011 FIFA Women's World Cup and the 2012 Summer Olympics tournament. A skilful forward, her playing style has been compared to that of Neymar.