- WCA 2020 Prague z.s., v likvidaci
- Windows User Group - Czech Republic
- World MUSADO Association, z.s.
- Westmusic, z.s.
- Waope z.s.
- Western Sport Club Hořice z.s.
- WHC FOXES Vyškov, z.s.
- Western-klub.cz z.s.
- World Shotokan Institut ČR, o.s.
- Woskovky, z. s.
- W. W. KAJAK KLUB Ostrava, z.s.
- Welnes relax, spolek
- Wellness & Travel Club z.s.
- WATOTO z.s. v likvidaci
- WATER & SNOW SKI CLUB, z.s.
- WB RACING TEAM, z.s.
- WESTERN HILL VALLEY CITY z.s.
- Wonder women racing team z.s.
- Waldorfská pedagogika, z.s.
- Wild Horde z.s.
- Warp Gaming z. s.
- WATCHER, o.s.
- WESTERN HORSE CLUB, z.s.
- WIRELESSINFO, z.s.
- Wild paddlers z.s.
- WAVE CLUB DUBÍ
- WILLA Dolní Jablonná v likvidaci
- Waldorfská iniciativa Liberec, z.s.
- Worldview Summit z.s.
- WildHouse, z.s.
- Western ranč Na Samotách
- WU-SHU PELHŘIMOV - SDRUŽENÍ BOJOVÝCH UMĚNÍ, z.s.
- Western Horseman Association
- WakeSurf Club Obříství z.s.
- WE SUPPORT WLB, z.s.
- Work Servis Agency z.s. v likvidaci
- WIFIFAMILYNET z.s.
- WALLACHIAN o. s.
- WorkSpace Europe - CZ, z.s.
- Willow racing team
- WATUTKA
- Wolverines o. s.
- Wakitaka, z.s.
- WALTTER MOTORSPORT ROKYCANY
- WPO Czech & Slovak Chapter o. s.
- W 135
- WELES, z. s.
- W & I SPORT CLUB o.s.
- Wireframing Design, z.s.
- WOV surf, z.s.