William Paul Troost-Ekong MON (born 1 September 1993) is a professional footballer who plays as a centre-back for Saudi Pro League club Al-Kholood.

Born into a mixed Dutch and Nigerian family, Troost-Ekong was eligible for both the Netherlands and Nigeria at international level.

[7] In his debut season in the Serie A, he made 35 league appearances and was booked four times, helping Udinese to 12th position.

Despite the team's relatively lacklustre league campaigns, Troost-Ekong started (and played for the full 90 minutes) in memorable victories against AC Milan and Juventus in his two seasons at Le Zebrette.

[10] On 24 January 2023, Troost-Ekong signed for Serie A club Salernitana on a loan with the option to buy at the end of the season.

He made his senior international debut for the Super Eagles on 13 June 2015, playing 90 minutes in an AFCON qualifying match against Chad.

[21] During the 2022 World Cup qualification third round, he scored a penalty in the second leg match against Ghana, which ended in a 1–1 draw and a defeat on the away goals rule; hence, his nation failed to reach the main tournament in Qatar.