- YACHTCLUB PETROV z.s., v likvidaci
- YACHT CLUB MILEŠOV z.s.
- Youth For Christ Immanuel, z.s.
- Yacht club Bystrc Brno z.s.
- Young Riders & Horses z.s.
- YCO - Yacht Club Ohrada, z.s.
- Young Planeswalkers
- YAKSHA GYM PLZEŇ z.s.
- Yacht klub CERE Plzeň
- Yacht club Vranovská přehrada z.s.
- Yacht Club Staré Město Praha, z.s.
- YOUTH ROMA PARLIAMENT, z. s. v likvidaci
- Yacht life Seč, z.s.
- yo-yo, z. s.
- Yankee and Confederate Artillery Club Y.A.K.A.C.
- YMCA v České republice
- Youth z.s.
- Young Initiative z.s.
- Yacht Club Solenice, z. s.
- Yetti Club Trutnov z. s.
- Young snipers team, z.s. "v likvidaci"
- Yacht Club Bohemia o.s.
- YAGANA Lucky zone, z.s.
- YounGuns Brno, z.s.
- YMCA Strmilov
- YORE - Občanské sdružení přátel historie
- Yachtclub Pardubice, z.s.
- YC Lískovec z.s.
- YMCA Setkání
- Yvonne Lombardo
- Young Golf Champions z.s.
- YELLOW LINE z.s.
- Youth For Future, z.s.
- Yacht Club Kotva Praha, z.s.
- YMCA Pelhřimov, z. s.
- Yacht club Znojmo, z.s.
- YMCA Plzeň, z. s.
- Yvajuk z. s.
- YOUnited z. s.
- YACHT CLUB SALAŠ
- Yogadana, z.s.
- YACHT CLUB NECHRANICE
- Youngtimer Cars Club, z.s.
- Yellow Hills z. s.
- YFU CZ, z.s.
- Yacht Club Nový Jičín z.s.
- YMCA Braník
- Yacht Club BER Slezská Harta o.s.
- YACHT CLUB MILEVSKO z.s.
- YMCA Praha