Niels Martens is a 23-year-old professional football player from NED. He currently plays for Fortuna Sittard, wearing the number 25 shirt. He plays primarily as a Goalkeeper. He stands at 201cm tall and weighs 85kg. His current market value is estimated at 25K €.

His most recent move was a from Fortuna Sittard to Free player on 2026-07-01.

In the Netherlands Eredivisie 2025-2026, Niels Martens played 25 matches, averaging 0 interceptions, 0 tackles, and 0 clearances per game.