Niels Fleuren (born 1 November 1986) is a Dutch professional footballer who plays as a left-back for Vierde Klasse club Vitesse '08.

[1][2][3] Fleuren made his professional debut at the age of 16 for VVV-Venlo, as a substitute in a 4–0 win at home against Cambuur on 3 October 2003.

[5] Over the years, the club attracted various players for the left-back position, including Youssef El Akchaoui, Jeffrey Leiwakabessy, Joeri Schroyen and Jason Bourdouxhe, but each time Fleuren emerged as the starter.

While in quarantine at home, he continued working as the TOP Oss contact person for social projects, where he organised activities such as a footgolf event for a clothing sponsor.

[18] On 22 June 2022, Fleuren joined Tweede Divisie club De Treffers on an amateur contract, after having decided to retire from professional football.