- Weyus help z.s.
- West Miners - fan klub FK Baník Sokolov
- WERDER BRNO
- World Castles Ambassadors z.s.
- Winternitzova vila, z.s.
- Work-Bridge, z. s.
- West Region Karlovy Vary
- W-CARP, z. s.
- World Press Photo, z.s.
- WICARA, z.s.
- WANGARI, z.s.
- Wikov SKI Skuhrov nad Bělou, z.s.
- WORLD FEDERATION OF NEUROSURGICAL SOCIETIES z.s.
- WOA - WORLD OF ANIMALS o.s.
- W-lan Jeviczko
- Way of art z.s.
- Wings - for us, o. s. v likvidaci
- WWW.BEZINKA.EU, z.s.
- WINGS team, spolek
- Weverklan, z.s.
- WASSA, z.s.
- WUDANG KUNG FU ASSOCIATION, o.s.
- Wallachia z.s.
- Woodmaid, z.s.
- World of Chronicles o. s.
- Waldorfská iniciativa Liberec, z.s.
- WSC Břeclav
- Wiking Gold Team, z.s.
- Western Motorbike, z.s.
- World Banya Association z. s.
- Wheels & Guns, z.s.
- WarField Events z.s.
- Wake Junior School z.s.
- West Best spolek
- Weightlifting club Brno, z.s.
- WAY TO YOUR HEART z.s. - zkrácený název spolku WTYH
- WG, z.s.
- WITHANIA, z.s.
- Wai Fighting Academy, z.s. v likvidaci
- Wilfried Second
- Way of harmony, z. s.
- Wattlink Beta z.s.
- Watchdog, z. s.
- WALZEL z.s.
- Wranitzky Kapelle, z.s.
- Way of Warrior z.s.
- WING of Youth, z.s.
- WWOOF Czechia, z.s.
- Wireframing Design, z.s.
- Warriors CB z.s.