- Yoga House, z.s.
- Yacht Club Říčany
- YC CoolStar, z.s.
- YMCA - Živá rodina
- YACHT CLUB MARINA VLTAVA, z.s.
- YMCA Pelhřimov, z. s.
- Yvonne Lombardo
- YOUTH LEADERSHIP EUROPE v likvidaci
- Yacht Club BER Slezská Harta o.s.
- Yachtclub Pardubice, z.s.
- Yoshinkan Nové Město nad Metují, z.s.
- Youth For Future, z.s.
- YounGuns Brno, z.s.
- Yacht Club Poseidon Praha z. s.
- Youth for Youth, z.s.
- YMCA Třebechovice
- YACHT CLUB SALAŠ
- Yacht club Rozkoš v likvidaci
- you connected, z.s.
- YMCA Praha
- Yacht club Labe z. s.
- YELLOW FEVER CLUB o.s.
- YMCA Braník
- Youth Progress, z.s.
- Young Glass Symposium z.s.
- YMCA Podivín, z. s.
- Yankee and Confederate Artillery Club Y.A.K.A.C.
- Yogadana, z.s.
- Yacht Club Velké Dářko o.s.
- YACHT CLUB ORLÍK, z.s.
- YORE - Občanské sdružení přátel historie
- YMCA SKAUT
- Your Freestyle, o.s. v likvidaci
- YACHT CLUB LESKOVEC, z.s.
- Youth and World z. s.
- YOUnited z. s.
- YC GRAF o.s. v likvidaci
- YACHT CLUB Dvořiště - Lišov, z.s.
- YachtClub Dyje z.s.
- YCR - Jachting Roudnice nad Labem, z.s.
- Ýpsilon
- Youth Business Network
- YMCA LIBEREC
- YACHT CLUB MEZ VSETÍN, z.s.
- Yacht Club Řež z.s.
- Yachtclub Balaton 24 z.s.
- Yacht club UNICORN, z. s.
- YACHT KLUB JESENICE z.s.
- Young snipers team, z.s. "v likvidaci"
- Youth in Czech Republic, z.s.