Givanildo Vieira de Sousa (born 25 July 1986), mononymously known as Hulk (Brazilian Portuguese: [ˈʁuwki]), is a Brazilian professional footballer who plays as a forward for Atlético Mineiro.

After starting out professionally with Vitória and then playing three years in Japan, he played several seasons in Portugal with Porto, winning ten titles – including the 2010–11 UEFA Europa League and three national championships. He was crowned the league's top scorer once. In 2012, he joined Russian Premier League side Zenit Saint Petersburg for €60 million, winning all three domestic honours and being named the competition's best player and being top scorer, once each. He was transferred to Shanghai SIPG for an Asian record €58.6 million in 2016.

Hulk made his international debut in 2009, and played for Brazil at the 2012 Summer Olympics as one of the three permitted over-age players. He went on to represent the Brazilian senior team in their 2013 FIFA Confederations Cup victory and fourth-place finish at the 2014 FIFA World Cup.

He is described by FIFA's official website as "a direct powerhouse of a centre- or wide-forward who knows his way around the box". He is strongly built for a footballer and acquired his nickname due to his likeness to actor Lou Ferrigno, who played the Incredible Hulk on the eponymous television show in the 1970s.