Kobbie Boateng Mainoo is an English professional footballer who now plays for Premier League club Manchester United as a midfielder.

Mainoo made his competitive United debut on 10 January 2023, starting in a 3-0 EFL Cup win over Charlton Athletic, and his league debut on 19 February, coming on as a substitute in a 3-0 win over Leicester City.

Mainoo has represented England at three different age groups: under-17, under-18, and under-19. He is also eligible to play for Ghana.