Jan Kromkamp (born 17 August 1980) is a Dutch retired footballer who played as a right back.
He amassed Eredivisie totals of 201 games and eight goals over the course of nine seasons, in representation of AZ and PSV. He also competed professionally in England and Spain, and started and finished his career at Go Ahead Eagles.
Born in Makkinga, Friesland, Kromkamp made his professional debuts for Go Ahead Eagles in Eerste Divisie, his first appearance in the competition being on 12 September 1998 in a 3–0 home win against FC Top Oss. He went on to play two full seasons with the team, scoring four goals in 33 games in his second.
Kromkamp moved to the Eredivisie with AZ for the 2000–01 campaign, being a regular first-team unit from the start. In his fourth year he appeared in 34 league matches as the Alkmaar side finished fourth, thus qualifying to the UEFA Cup and going on to reach the semifinals in the continental competition.