Givanildo Vieira de Souza (born 25 July 1986), commonly known as Hulk, is a Brazilian professional footballer who plays for Zenit Saint Petersburg, as a winger.

After starting out professionally with Vitória and playing three years in Japan, he went on to play several seasons in Portugal with Porto, winning ten major titles – including the 2011 Europa League and three national championships – and being crowned the league's top scorer once.

Hulk made his international debut in 2009, and played for Brazil at the 2012 Summer Olympics as one of the three permitted overage players.