is a professional footballer who plays as a winger for EFL League Two club Milton Keynes Dons. Born and raised in England to a Jamaican father and a Belizean mother of Guatemalan descent, he plays for the Guatemala national team at international level.

Born in Birmingham, he began his career with Wolverhampton Wanderers, making his professional debut in 2009 at the age of nineteen. However, after loan spells with Peterborough United and Sheffield United, he left the club, joining Peterborough on a permanent deal in 2012.

He made 60 appearances for Peterborough, spending time on loan with Portsmouth, Shrewsbury Town and Cambridge United, before joining Rochdale where he made 83 appearances during a two-year spell. In 2017, he joined Cardiff City, where he helped the side win promotion to the Premier League in his first season. In November 2020, his contract was terminated by the club for drug abuse after 92 appearances for the club.

In February 2021, he joined Middlesbrough, but was released by the club in May 2021. In November 2021, after a trial he joined Sheffield Wednesday, but left the club in June 2022, after rejecting a contract offer. In July 2022, he signed with Derby County and in his second season with the club, he helped the side win promotion to the Championship, he was also named the League One Team of the Season for the 2023–24 season. In the summer of 2025, Mendez-Laing signed for Milton Keynes Dons, after he played 145 times in three years at Derby.

Mendez-Laing has also represented England at under-16 and under-17 level, before declaring for Guatemala in 2023.