The Arena das Dunas (lit. "Dunes Arena") is a football stadium designed by leading sports architect, Christopher Lee of Populous under construction since January 2011 to host football matches for the 2014 FIFA World Cup which will be held in Brazil. It is described by Mr. Lee as "... the most perfect stadium in South America."

It has been built in the city of Natal in the capital of Rio Grande do Norte Brazilian state. The stadium is due to be built in place of the Machadão stadium the Machadinho gym, whose buildings were demolished in 2011.