- Yoshinkan Nové Město nad Metují, z.s.
- YMCA - Živá rodina
- Yacht klub Mělník z.s.
- YAGANA Lucky zone, z.s.
- Yacht club Slezská Harta z.s.
- Yacht Club NEPTUN Komárov z.s.
- Youth Included, z. s.
- Yacht Club Baník Most z. s.
- YMCA Orlová
- YACHT CLUB Vysoké Mýto z.s.
- YACHT CLUB KLADNO z.s.
- Yacht Club ROSO Břevnov v likvidaci
- Yacht Club Tachov z.s.
- YOUnited z. s.
- Youth Business Network
- Yoga Slavičín, z.s.
- Yacht Club DRAGON 77
- YACHT KLUB ORLÍK - BOR z.s.
- Young czech talents o.s.
- YACHT CLUB NECHRANICE
- You can do it!, z.s.
- YACHT CLUB MILEŠOV z.s.
- YACHT CLUB KOLODĚJE
- Young Planeswalkers
- YACHT CLUB Chrášťany z.s.
- Young Folks o.s.
- YounGuns Brno, z.s.
- YC GRAF o.s. v likvidaci
- Yachtclub Pardubice, z.s.
- Yellow Hills z. s.
- YACHT CLUB SILŮVKY, z.s.
- YMCA Sever, z. s.
- YMCA Neveklov "v likvidaci"
- Yachtmeni, z.s.
- Yacht club D.I.M. Bezdrev z.s.
- Youth For Future, z.s.
- YACHT CLUB FRYMBURK
- Y - Open, z.s.
- Yankee and Confederate Artillery Club Y.A.K.A.C.
- YIMBY Praha, z.s.
- Youth and World z. s.
- YARD RESORT, z.s.
- Yacht Club Poseidon Praha z. s.
- Yoga Experience Center, z.s.
- YWAM ČR z.s.
- YFU CZ, z.s.
- Yetti Club Trutnov z. s.
- Yerlango o.s.
- Young Riders & Horses z.s.
- YMCA Pelhřimov, z. s.