- Yellow Hills z. s.
- YACHT CLUB Chrášťany z.s.
- Yacht Club Rabyně-Babor v likvidaci
- YOUTH LEADERSHIP EUROPE v likvidaci
- YACHTCLUB PETROV z.s., v likvidaci
- YMCA Strmilov
- YAMAMOTO Czech z.s.
- Yellow Sisters z. s.
- Yes z.s.
- YACHTCLUB PASOHLÁVKY z. s.
- Yacht Club Vlhká plachta, z.s.
- Yacht Club BER Slezská Harta o.s.
- Young Czech Arbitration Professionals, z.s.
- YOUTH ROMA PARLIAMENT, z. s. v likvidaci
- Y. C. Zlín v likvidaci
- Yves Nice
- Youth Progress, z.s.
- YMCA Podivín, z. s.
- Y.C. Nové Sedlo
- Youthink z.s. v likvidaci
- YOGASHRAMA, spolek
- Yoga House, z.s.
- YMCA Letohrad
- YMCA Ostrava-Poruba
- YACHT CLUB CERE, z.s.
- YC Lískovec z.s.
- YACHT CLUB Vysoké Mýto z.s.
- Yogadana, z.s.
- YMCA Olomouc
- Yoga Therapy Praha, z. s.
- YOUnited z. s.
- YACHT CLUB BOHEMIA z. s.
- YOUNGTIMER CLASSIC SPORT CARS CLUB, o.s.
- YAD Albert z.s.
- Young Leaders CZ z.s.
- Yacht Club Říčany
- YACHT CLUB SILŮVKY, z.s.
- Ynnovations - Institut pro znalostní společnost v likvidaci
- Young Brothers Gym z. s.
- Your Cooking Project, z.s.
- YOUnique z.s.
- Yacht Club Kovářov z.s.
- Yacht Club Tachov z.s.
- YAHÚ Team Kostelec, z.s.
- Yacht club ČSA, v likvidaci
- Yankee and Confederate Artillery Club Y.A.K.A.C.
- Y-Club, z.s.
- Yoki Home, z.s.
- Youth in Czech Republic, z.s.
- Youth and Environment Europe Czech Republic