Moussa N'Diaye (born 18 June 2002) is a Senegalese professional footballer who plays as a left-back for club Schalke 04, on loan from Belgian Pro League club Anderlecht.
In 2020, N'Diaye signed for Spanish third tier side Barcelona Atlètic. In 2022, he signed for Anderlecht in the Belgian top flight. N'Diaye scored his first goal for Anderlecht on 13 August 2023, the winner in a 0-1 victory against Sint-Truiden.
On 2 February 2026, he was loaned to German club Schalke 04 until the end of the season.
N'Diaye represented the Senegal under-20 team at the 2019 Africa U-20 Cup of Nations and 2019 FIFA U-20 World Cup. In November 2022, he was called up to the Senegal senior team for the 2022 FIFA World Cup in Qatar, replacing the injured Sadio Mané in the squad.