- Yacht club Labe z. s.
- Young MBSA
- Yobi Take Puraha Shakuhachi Collegium z.s.
- Yacht Club Kotva Praha, z.s.
- Yoga Experience Center, z.s.
- YAKSHA GYM PLZEŇ z.s.
- YACHT CLUB ORLÍK, z.s.
- Young Challengers, z.s.
- YACHT CLUB SALAŠ
- YOUNG TALENTS, z. s.
- Youth For Christ Immanuel, z.s.
- YWCA v České republice v likvidaci
- YogafestZLÍN z.s.
- Yorkshire Terrier klub chovatelů a jeho přátel, z.s.
- Yacht Club Staré Město Praha, z.s.
- Yacht Club ROSO Břevnov v likvidaci
- Youth in Czech Republic, z.s.
- YMCA Jindřichův Hradec
- Yacht klub Mělník z.s.
- YACHT CLUB PŘÍBRAM, z.s.
- Yacht club Bystrc Brno z.s.
- YACHT CLUB REGENT z.s.
- YC GRAF o.s. v likvidaci
- Youthink z.s. v likvidaci
- Yacht Club PARS, z.s.
- Yacht Club Poseidon Praha z. s.
- Yamaha Star Czech Republic z.s. "v likvidaci"
- YOUnique z.s.
- Yacht Club Yachta´s z.s.
- YMCA Neveklov "v likvidaci"
- Yvajuk z. s.
- Yacht Club NEPTUN Komárov z.s.
- YACHT CLUB Vysoké Mýto z.s.
- Yettey v likvidaci
- Yacht Club Řež z.s.
- Yacht klub J.J.J., z.s.
- Yoga Surya International, z.s.
- YROBAT z.s.
- Yoda Mentorship Programme, z.s.
- YOUNGTIMER - Česká republika, z.s.
- Young Riders & Horses z.s.
- Ýpsilon
- Young Golf Champions z.s.
- YWAM ČR z.s.
- Yacht Club Baník Most z. s.
- Yankee and Confederate Artillery Club Y.A.K.A.C.
- YOUTH LEADERSHIP EUROPE v likvidaci
- Yacht club Letovice
- Yacht club Slezská Harta z.s.
- Yacht Club Solenice, z. s.