TMZ Zeeland, or Trimbelangen Midden Zeeland, is a cycling organization serving the Zeeland region of the Netherlands. It coordinates a varied programme of road racing and mountain bike events, bringing riders together for competition throughout the season. Its website provides a 2026 race calendar, event updates, results and regulations, alongside information on licences and transponders.

The organization also supports structured competition through seasonal series and rankings. These include the TMZ Winter Competition, organized with ATB Team X-Treme, the Zeeuws Flandrien Classification, and a progression ranking that tracks points earned by Sportklasse and S/P riders. TMZ publishes category guidance and additional provisions intended to promote fair, safe racing. Its events range from local road races and championships to mountain bike and cyclocross meetings, including the Jansen Wielersport Offroad Wielerweekend in Wolphaartsdijk. News coverage reports on race schedules, cancellations and results, helping participants and followers stay informed. TMZ Zeeland is a regional resource for amateur cycling competition, connecting riders with events, standings and practical information about taking part.