- YC Frymburk z. s.
- Yacht Club ARCHER, z.s.
- Yacht Club Baník Most z. s.
- Yacht club Labe z. s.
- Youth and Environment Europe Czech Republic
- YMCA Husinec
- Yamaha Star Czech Republic z.s. "v likvidaci"
- YACHTGROUP.CZ
- Yves Hélory, z. s.
- YAMAMOTO Czech z.s.
- YMCA Pelhřimov, z. s.
- YC to Stella z.s.
- YACHT CLUB KOLODĚJE
- Youth and Students for Peace Czech Republic z.s.
- Young Initiative z.s.
- YAHÚ Team Kostelec, z.s.
- YettiOn, z.s.
- YOUNGTIMER CLASSIC SPORT CARS CLUB, o.s.
- Y-Club, z.s.
- youmove z.s.
- YMCA Orlová
- YMCA Brno
- YMCA Setkání
- Yacht Club Kotva Praha, z.s.
- YPJ Evropa, z.s. v likvidaci
- YC RODOP, z.s.
- Yacht club Ústí nad Labem z.s.
- YOUTH LEADERSHIP EUROPE v likvidaci
- Young Brothers Gym z. s.
- Yettey v likvidaci
- Yacht Club Slezan Opava, z.s.
- YOUNG TALENTS, z. s.
- YORE - Občanské sdružení přátel historie
- Yachtmeni, z.s.
- Y - Open, z.s.
- YMCA Sever, z. s.
- YMCA v České republice
- YWCA v České republice v likvidaci
- yFilm
- YELLOW LINE z.s.
- Yacht club ANCORA
- YACHT CLUB CERE, z.s.
- Youth Europa Czechia z.s.
- YPG Evropa, z.s. v likvidaci
- YACHT CLUB SaS, z.s.
- YCR - Jachting Roudnice nad Labem, z.s.
- Young MBSA
- YWAM ČR z.s.
- YACHT CLUB KLADNO z.s.
- YAKSHA GYM PLZEŇ z.s.