- YACHT KLUB ORLÍK - BOR z.s.
- YACHT CLUB MEZ VSETÍN, z.s.
- Y.C. Markop FL, z.s.
- YMCA Setkání
- Yachting CZE, z.s.
- Yacht Club Solenice, z. s.
- Young Leaders CZ z.s.
- Yacht Club Kovářov z.s.
- Yacht club ANCORA
- YachtClub Dyje z.s.
- YC Frymburk z. s.
- YMCA LIBEREC
- YCO - Yacht Club Ohrada, z.s.
- Yacht Club ARCHER, z.s.
- YMCA v České republice
- YACHT CLUB A.N.V.
- Yacht Club Bohemia o.s.
- Yacht Club Řež z.s.
- YogafestZLÍN z.s.
- YOUNGTIMER - Česká republika, z.s.
- Young czech talents o.s.
- YC GRAF o.s. v likvidaci
- YAGANA Lucky zone, z.s.
- YMCA Orlová
- Yacht club Bystrc Brno z.s.
- YOUTH ROMA PARLIAMENT, z. s. v likvidaci
- YOUnique z.s.
- Youth in Czech Republic, z.s.
- YounGuns Brno, z.s.
- YMCA Letohrad
- YACHT CLUB MILEŠOV z.s.
- Ynnovations - Institut pro znalostní společnost v likvidaci
- Youth Europa Czechia z.s.
- YORE - Občanské sdružení přátel historie
- Yoga Therapy Praha, z. s.
- YFU CZ, z.s.
- Yacht club Slezská Harta z.s.
- Yacht Club Actinet v likvidaci
- Yoga Surya International, z.s.
- Yacht klub J.J.J., z.s.
- Yetti Club Trutnov z. s.
- YC PanCzech, z.s.
- YMCA Brno
- Yvajuk z. s.
- Yobi Take Puraha Shakuhachi Collegium z.s.
- YACHT CLUB SALAŠ
- Youth Included, z. s.
- YETI RESCUE,z.s.
- Young Riders & Horses z.s.
- YACHT CLUB FRYMBURK