- Youth in Czech Republic, z.s.
- YACHT CLUB ORLÍK, z.s.
- Yacht Club Baník Most z. s.
- Yachtclub Jinočany, z.s.
- Yacht klub Jestřábí, z.s.
- YC Píšťany - vodní sporty
- Yacht Club Bohemia o.s.
- YACHT CLUB MISTRAL
- YACHT CLUB DOKSY, spolek
- YACHT club Jablonec n.Nisou
- you connected, z.s.
- YC Frymburk z. s.
- Young Leaders CZ z.s.
- YELLOW FEVER CLUB o.s.
- Yacht club Rozkoš v likvidaci
- Yacht klub Mělník z.s.
- Youth4Ova, z.s.
- YWCA v České republice v likvidaci
- Yogadana, z.s.
- YAD Albert z.s.
- YACHT CLUB KLADNO z.s.
- YACHT CLUB BOHEMIA z. s.
- YES o.s.
- YACHT CLUB MEZ VSETÍN, z.s.
- Yacht club ANCORA
- Yoga Ostrava, z.s.
- YAGANA Lucky zone, z.s.
- Yoshinkan Nové Město nad Metují, z.s.
- YOUNGTIMER CLASSIC SPORT CARS CLUB, o.s.
- Yamka Minigolfclub Butovice, z. s.
- YAKSHA GYM PLZEŇ z.s.
- Your Freestyle, o.s. v likvidaci
- Youngtimer Cars Club, z.s.
- Yacht club UNICORN, z. s.
- YACHTCLUB PETROV z.s., v likvidaci
- Youth and World z. s.
- Yacht klub Junior Praha
- YOUnited z. s.
- YACHT CLUB MILEŠOV z.s.
- YACHTCLUB BANÍK OSTRAVA
- YMCA DAP
- YPO Czech Chapter z. s.
- YMCA Olomouc
- YMCA Husinec
- Yoga House, z.s.
- yeah-but-still z.s.
- Yacht Club ROLLING BOTTLES, z.s.
- Young MBSA
- Yacht Club Actinet v likvidaci
- Youth z.s.