- WITHANIA, z.s.
- Waldorfská iniciativa, z. s.
- Wandr klub Hradec Králové v likvidaci
- WOSTROWFEST z.s.
- Wakeboard Club Ostrava
- World dance sport z.s.
- World Shotokan Institut ČR, o.s.
- WORLD UNION OF POLE DANCE & AERIAL SPORTS, z.s.
- Windsurfing Club Praha, v likvidaci
- Wireframing Design, z.s.
- W-iniciativa
- W collegium z.s.
- Watter World
- World of Chronicles o. s.
- Wallato, o. s.
- Wartburg klub v Hradci Králové v likvidaci
- World Smart Biotic Pump Platform, z. s.
- WDHteam z.s.
- WAY TO YOUR HEART z.s. - zkrácený název spolku WTYH
- World Insignia Collectors Union
- Westmusic, z.s.
- WORLDWIDE CEMENT ASSOCIATION z.s.
- Weekend World, z.s. v likvidaci
- Work-Bridge, z. s.
- W-K Expert CZ, z.s.
- WUCGOLF 2012, v likvidaci
- Windsurfing Club Velké Dářko z.s.
- Wiki Support, z. s.
- Wheels of Wild z. s.
- Wheelchair Basketball Studánka Pardubice, z.s.
- Workshop Street ND z.s.
- Waldorfská škola na pravém břehu Vltavy o.s.
- Wendy Basket Ostrava
- WCO z.s.
- Western Association v likvidaci
- Western Club Bohuňovice o.s.
- Wild Geese z.s.
- W.B. o.s.
- Whisky&You z.s. v likvidaci
- WW Sport Kladno, v likvidaci
- World Mission Society Church of God, z. s.
- WHITE SOX - BASEBALL
- Western Horseman Association
- WPO Czech & Slovak Chapter o. s.
- West Miners - fan klub FK Baník Sokolov
- Win 4 You, z.s., v likvidaci
- WW8 expedition group o.s.
- World Banya Association z. s.
- Wattlink Alfa z.s.
- Wakitaka, z.s.