- Yacht club Bystrc Brno z.s.
- YESYES z.s.
- YounGuns Brno, z.s.
- YMCA Sever, z. s.
- YETI RESCUE,z.s.
- YEAH, z.s.
- Yacht Club Řež z.s.
- youmove z.s.
- YACHT CLUB MILEVSKO z.s.
- Young Initiative z.s.
- YACHT KLUB JESENICE z.s.
- YMCA Ústí nad Labem
- YPO Czech Chapter z. s.
- YC Lískovec z.s.
- Youth in Czech Republic, z.s.
- YMCA Brno
- YMCA Hradec Králové
- Yacht Club Solenice, z. s.
- YMCA Praha
- YACHT KLUB ORLÍK - BOR z.s.
- YMCA Orlová
- YMCA - Živá rodina
- Yacht Club Kotva Praha, z.s.
- YOUNGTIMER CLASSIC SPORT CARS CLUB, o.s.
- YMCA Děčín
- Yachtclub Pardubice, z.s.
- Youth For Future, z.s.
- YACHTCLUB PETROV z.s., v likvidaci
- YACHT CLUB Chrášťany z.s.
- Young Golf Champions z.s.
- Yukiyama dojo, z. s.
- Youth Progress, z.s.
- YAKSHA GYM PLZEŇ z.s.
- YWCA v České republice v likvidaci
- YACHT CLUB KOLODĚJE
- Yacht club Vranovská přehrada z.s.
- YMCA Letohrad
- Yacht Club ARCHER, z.s.
- YMCA Husinec
- YACHT CLUB ORLÍK, z.s.
- Yacht Club Slezan Opava, z.s.
- yeah-but-still z.s.
- YACHT CLUB BOHEMIA z. s.
- Youth and World z. s.
- YACHT CLUB A.N.V.
- YC PanCzech, z.s.
- Yacht Club Kozmice - občanské sdružení
- Yoki Home, z.s.
- Yacht club Krnov z.s.
- YOUNGTIMER - Česká republika, z.s.