Willian Souza Arão da Silva (born 12 March 1992) is a Brazilian professional footballer who plays as a defensive midfielder or a centre-back for Greek Super League club Panathinaikos.

Featured in the Copa São Paulo de Futebol Júnior in 2011, the player has good quality in the tackle and can exercise its left side.

[19] With head coach Rogério Ceni, during the 2020 season, Arão started to also play as centre back.

On 14 July 2022, Arão moved abroad for the first time in his career, signing a two-year contract with an option for an additional year with Turkish club Fenerbahçe.

On 19 January 2017 Arão was called up to the Brazil national team for the first time to play a friendly match against Colombia.