- YMCA Plzeň, z. s.
- Yacht club Znojmo, z.s.
- YOUNGTIMER CLASSIC SPORT CARS CLUB, o.s.
- YPO Czech Chapter z. s.
- YMCA Praha
- Yachting CZE, z.s.
- Yacht Club Nautilus Praha
- YAKSHA GYM PLZEŇ z.s.
- YARD RESORT, z.s.
- Yacht Club BER Slezská Harta o.s.
- Youth Europa Czechia z.s.
- Yale Model Government Europe CZ, o. s.
- YESYES z.s.
- Yacht Club Skochovice
- YELLOW LINE z.s.
- Youth for Youth, z.s.
- Youth For Christ Immanuel, z.s.
- YogafestZLÍN z.s.
- YACHT CLUB PŘÍBRAM, z.s.
- Yacht club Rozkoš v likvidaci
- YAD Albert z.s.
- Your Cooking Project, z.s.
- Yoga House, z.s.
- Yoga Slavičín, z.s.
- YIMBY Praha, z.s.
- Yoda Mentorship Programme, z.s.
- Yacht Club Rabyně-Babor v likvidaci
- Yorkshire Terrier klub chovatelů a jeho přátel, z.s.
- Yacht klub CERE Plzeň
- Yacht Club Lipno nad Vltavou, z.s.
- Yobi Take Puraha Shakuhachi Collegium z.s.
- YMCA - Živá rodina
- YACHT CLUB RAZOVÁ z. s.
- Yacht Club ROSO Břevnov v likvidaci
- YAMAHA TEAM Petr Kalášek z.s. v likvidaci
- YMCA DAP
- YMCA Olomouc
- YogFest z.s.
- YMPAL- SPORT, o.s.
- YC PanCzech, z.s.
- Youth For Future, z.s.
- Young snipers team, z.s. "v likvidaci"
- Yellow Hills z. s.
- YMCA Ostrava-Poruba
- Yacht club Bystrc Brno z.s.
- YC GRAF o.s. v likvidaci
- Youth and Environment Europe Czech Republic
- YACHT CLUB ORLÍK, z.s.
- You can do it!, z.s.
- YWCA v České republice v likvidaci