- YC to Stella z.s.
- YACHT CLUB CERE, z.s.
- YMCA Ústí nad Labem
- Yacht club Lipno z.s.
- Youngtimer Cars Club, z.s.
- YMCA - Živá rodina
- Yacht club Letovice
- Yacht club Znojmo, z.s.
- YMPAL- SPORT, o.s.
- Yankee and Confederate Artillery Club Y.A.K.A.C.
- Yamka Minigolfclub Butovice, z. s.
- YEAH, z.s.
- YPJ Evropa, z.s. v likvidaci
- YOUnique z.s.
- youmove z.s.
- Youth in Czech Republic, z.s.
- Yoga House, z.s.
- you connected, z.s.
- Yoda Mentorship Programme, z.s.
- yeah-but-still z.s.
- YACHT CLUB PŘÍBRAM, z.s.
- YORE - Občanské sdružení přátel historie
- YMCA Třebechovice
- Youth Europa Czechia z.s.
- yo-yo, z. s.
- Yacht klub Jestřábí, z.s.
- Yacht klub Junior Praha
- YMCA DAP
- Yak55 Aerobatic Team z.s.
- Young Glass Symposium z.s.
- YACHT KLUB ORLÍK - BOR z.s.
- YACHT CLUB MISTRAL
- Yacht Club BER Slezská Harta o.s.
- Yachting CZE, z.s.
- Yachtclub Jinočany, z.s.
- YOGASHRAMA, spolek
- YACHT club Jablonec n.Nisou
- Yoga Experience Center, z.s.
- Yacht Club Říčany
- YACHT CLUB BOHEMIA z. s.
- Yacht club ANCORA
- Yacht club Bystrc Brno z.s.
- Young Riders & Horses z.s.
- Young Folks o.s.
- Yacht Club Solenice, z. s.
- Yoki Home, z.s.
- YMCA Pelhřimov, z. s.
- YAHÚ Team Kostelec, z.s.
- Yale Model Government Europe CZ, o. s.
- YANDEROV, z. s.