- Yamaha Star Czech Republic z.s. "v likvidaci"
- Yvonne Lombardo
- YMCA v České republice
- YEAH, z.s.
- YARD RESORT, z.s.
- YogFest z.s.
- Yacht Racing Team z.s.
- Ýpsilon
- YACHT CLUB SaS, z.s.
- Yacht klub J.J.J., z.s.
- YMCA Pelhřimov, z. s.
- Yacht klub CERE Plzeň
- YMCA Hradec Králové
- YMCA SKAUT
- Yacht Club Velké Dářko o.s.
- Yacht club D.I.M. Bezdrev z.s.
- YMCA Ústí nad Labem
- YAMAMOTO Czech z.s.
- Youth Progress, z.s.
- Yacht club Ústí nad Labem z.s.
- YESYES z.s.
- YAD Albert z.s.
- YAHÚ Team Kostelec, z.s.
- YERBABUENATEAM
- YMPAL- SPORT, o.s.
- Y.C. Markop FL, z.s.
- YACHT CLUB KLADNO z.s.
- Youth Included, z. s.
- Young Leaders CZ z.s.
- YACHT CLUB DOKSY, spolek
- YACHT CLUB FRYMBURK
- Y-Club, z.s.
- Yoga Experience Center, z.s.
- Your Cooking Project, z.s.
- Yachtmeni, z.s.
- Yoga Therapy Praha, z. s.
- YOUNGTIMER CLASSIC SPORT CARS CLUB, o.s.
- YACHT CLUB REGENT z.s.
- Young Challengers, z.s.
- YMCA Jindřichův Hradec
- YACHTCLUB BANÍK OSTRAVA
- Yacht Club Nautilus Praha
- YES o.s.
- YACHT CLUB MILEVSKO z.s.
- Yobi Take Puraha Shakuhachi Collegium z.s.
- YACHT KLUB JESENICE z.s.
- Yacht Club Rabyně-Babor v likvidaci
- YMCA Setkání
- YMCA - Živá rodina
- YACHT club Jablonec n.Nisou