Jan Vreman (born 17 September 1965) is a Dutch football manager and former player, who is the manager of National First Division club Cape Town City.
Vreman spent his entire playing career with Dutch football club De Graafschap. His stay with the club earned him the nickname Mister De Graafschap.
On 3 January 2014, Vreman became interim manager of De Graafschap as a replacement for Pieter Huistra. On 25 March 2014, De Graafschap appointed Vreman as their permanent manager.
In his first full season in charge, Vreman guided De Graafschap to promotion to the Eredivisie after beating Almere City, Go Ahead Eagles and FC Volendam in the promotion/relegation play-offs.
On 14 July 2025, Vreman was announced as manager of National First Division club Cape Town City, leaving De Graafschap for the first time in his career.