William Douglas de Amorim (born 15 December 1991) is a Brazilian professional footballer who plays as a winger.

On 6 November 2014, De Amorim scored his first goal in UEFA Europa League, netting in the 81st minute for a 1–1 home draw against Celtic Glasgow.

[1] On 13 August 2016, FCSB announced the signing of Amorim for an undisclosed fee, with the player agreeing to a five-year deal with a €10 million buyout clause.

[2] On 21 January 2019, Xanthi officially announced the signing of William on a one-and-a-half-year loan.

[6] De Amorim moved to Romania when he was 18 years old, and on 27 May 2016 he obtained Romanian citizenship.