- Yacht club D.I.M. Bezdrev z.s.
- Yvontek, z.s. v likvidaci
- YACHT CLUB CERE, z.s.
- Y-Club, z.s.
- Yacht Club Řež z.s.
- Youth and Environment Europe Czech Republic
- YMCA Sever, z. s.
- YMCA Ústí nad Labem
- Youth Included, z. s.
- YESYES z.s.
- Yellow Hills z. s.
- Yacht Club Velké Dářko o.s.
- Yacht club ANCORA
- YMCA Orlová
- YMCA Strmilov
- YMCA Pelhřimov, z. s.
- Youth Prague z.s.
- Yacht Club Nautilus Praha
- Yacht Club Kozmice - občanské sdružení
- Young Initiative z.s.
- Young Brothers Gym z. s.
- YC to Stella z.s.
- Y. C. Zlín v likvidaci
- Y - Open, z.s.
- YMCA Braník
- Yamaha Star Czech Republic z.s. "v likvidaci"
- YMCA LIBEREC
- YC CoolStar, z.s.
- Yacht club ČSA, v likvidaci
- Yachtclub Jinočany, z.s.
- YACHTGROUP.CZ
- Yoga Experience Center, z.s.
- Yacht Club Lanškroun, z.s.
- YCR - Jachting Roudnice nad Labem, z.s.
- YACHT CLUB MILEVSKO z.s.
- YettiOn, z.s.
- YACHT CLUB A.N.V.
- Y.C. Markop FL, z.s.
- YMCA - Živá rodina
- Your Cooking Project, z.s.
- YOUnited z. s.
- Yacht Club Nový Jičín z.s.
- YACHT CLUB LESKOVEC, z.s.
- YMCA Husinec
- YERBABUENATEAM
- YachtClub Dyje z.s.
- Yamka Minigolfclub Butovice, z. s.
- Youth4Ova, z.s.
- Yacht Club Rabyně-Babor v likvidaci
- YACHT CLUB SALAŠ