William Alves de Oliveira (born 7 December 1991) is a Brazilian professional footballer who plays as a forward for I-League club Sreenidi Deccan.
He made his debut for Botafogo in Copa Sudamericana match against Colombian Independiente Santa Fe.
William Alves signed a three-year contract with fellow Corgoň liga club MŠK Žilina in January 2014.
On 6 August 2015, he scored a 120th-minute goal against FC Vorskla that allowed Žilina to reach the play-off rounds of Europa League.
Two weeks later, William scored a brace against Athletic Bilbao in the first leg of the Europa League play-off round, which Žilina won 3–2 after having been 2–0 down.