- Yacht club Santa Maria v likvidaci
- YARD RESORT, z.s.
- YACHT CLUB DOKSY, spolek
- YMCA - Živá rodina
- Youth Europa Czechia z.s.
- Yacht klub Mělník z.s.
- YESYES z.s.
- Yacht Club Staré Město Praha, z.s.
- YOUR FREESTYLE ACADEMY z.s.
- YC CoolStar, z.s.
- Yachtclub Pardubice, z.s.
- Yacht club Ústí nad Labem z.s.
- YACHT CLUB A.N.V.
- Yamka Minigolfclub Butovice, z. s.
- Y. C. Zlín v likvidaci
- Young snipers team, z.s. "v likvidaci"
- YACHT CLUB RAZOVÁ z. s.
- YCO - Yacht Club Ohrada, z.s.
- Yogadana, z.s.
- Yoga Therapy Praha, z. s.
- YC Lískovec z.s.
- Yoga House, z.s.
- YachtClub Dyje z.s.
- Ynnovations - Institut pro znalostní společnost v likvidaci
- YMCA Brno
- Yacht Club Rabyně-Babor v likvidaci
- YMCA Sever, z. s.
- YACHT CLUB CERE, z.s.
- Yacht Club Říčany
- Yettey v likvidaci
- Yacht Club ROSO Břevnov v likvidaci
- Yacht Club BER Slezská Harta o.s.
- Yacht club Znojmo, z.s.
- You can do it!, z.s.
- Young Folks o.s.
- Youth and World z. s.
- YACHTCLUB BANÍK OSTRAVA
- YACHT CLUB SaS, z.s.
- YMCA Letohrad
- YMCA Praha
- Young MBSA
- Youth in Czech Republic, z.s.
- Yacht life Seč, z.s.
- Yacht Club ROLLING BOTTLES, z.s.
- Yacht club UNICORN, z. s.
- Youth Prague z.s.
- Youth for Youth, z.s.
- YC PanCzech, z.s.
- YC to Stella z.s.
- Young Planeswalkers