Koen Blommestijn (born 14 October 1999) is a Dutch professional footballer who plays for USL League One side Westchester SC.
[2] Playing for in the Tweede Divisie for FC Volendam II, Blommestijn totaled 22 goals in 34 matches.
He made his professional debut with the senior team on 11 February 2022 for FC Volendam in a 2–1 win over Jong AZ.
In February 2024, Blommestijn joined Tweede Divisie club Quick Boys on loan until the end of the season.
[7] On 4 January 2025, Blommestijn signed for USL League One side Westchester SC in the United States ahead of their inaugural 2025 season.