- Yacht Club Tachov z.s.
- YC Frymburk z. s.
- YFU CZ, z.s.
- Yacht klub J.J.J., z.s.
- Y.C. Markop FL, z.s.
- YMCA Braník
- YAMAHA TEAM Petr Kalášek z.s. v likvidaci
- YOUnique z.s.
- YOUNGTIMER CLASSIC SPORT CARS CLUB, o.s.
- Y. C. Zlín v likvidaci
- Y - Open, z.s.
- YACHT CLUB REGENT z.s.
- Yacht Club Nautilus Praha
- YACHT CLUB MILEŠOV z.s.
- YMCA Třebechovice
- Yoga Experience Center, z.s.
- YAD Albert z.s.
- Yacht klub Mělník z.s.
- You can do it!, z.s.
- YMCA Orlová
- YACHT CLUB MILEVSKO z.s.
- YMCA - Živá rodina
- YOUnited z. s.
- Yacht club Krnov z.s.
- YMCA Olomouc
- Yetti Club Trutnov z. s.
- youmove z.s.
- YANDEROV, z. s.
- Yacht Club ROSO Břevnov v likvidaci
- YELLOW FEVER CLUB o.s.
- YMCA Plzeň, z. s.
- YZENGRIN z. s.
- YMCA Praha
- Yvajuk z. s.
- Yacht Club Actinet v likvidaci
- YMCA Brno
- Youngtimer Cars Club, z.s.
- YAHÚ Team Kostelec, z.s.
- Youth Included, z. s.
- Yachtclub Balaton 24 z.s.
- YMCA Jindřichův Hradec
- YACHT KLUB JESENICE z.s.
- Yogadana, z.s.
- YCR - Jachting Roudnice nad Labem, z.s.
- Yacht Club PARS, z.s.
- YETI RESCUE,z.s.
- YACHT CLUB BOHEMIA z. s.
- Yacht Club Solenice, z. s.
- YPG Evropa, z.s. v likvidaci
- Yacht club Lipno z.s.