Boy Kemper (born 21 June 1999) is a Dutch professional footballer who plays as a left-back for club NAC Breda.
Kemper made his Eerste Divisie debut for Jong Ajax on 18 August 2017 in a game against SC Cambuur.
In June 2023, Kemper signed for NAC Breda on a three-year contract subject to completing a medical.
Jong Ajax