- Yoda Mentorship Programme, z.s.
- Youth4Ova, z.s.
- Young Leaders CZ z.s.
- Ýpsilon
- YMCA Plzeň, z. s.
- Yves Nice
- YMCA Děčín
- Yacht club Jeseník z.s.
- Yes z.s.
- YOUNG TALENTS, z. s.
- Ynnovations - Institut pro znalostní společnost v likvidaci
- YACHT CLUB PŘÍBRAM, z.s.
- Yacht Club Kotva Praha, z.s.
- YACHT CLUB SALAŠ
- You can do it!, z.s.
- YPJ Evropa, z.s. v likvidaci
- yeah-but-still z.s.
- YACHT CLUB DOKSY, spolek
- YMPAL- SPORT, o.s.
- youmove z.s.
- Yoga Slavičín, z.s.
- YACHTGROUP.CZ
- Yvonne Lombardo
- Yvontek, z.s. v likvidaci
- YC PanCzech, z.s.
- YogafestZLÍN z.s.
- Youth and Environment Europe Czech Republic
- Yamka Minigolfclub Butovice, z. s.
- Yoga Surya International, z.s.
- YachtClub Dyje z.s.
- YACHT CLUB Dvořiště - Lišov, z.s.
- YMCA v České republice
- Yangame Gym
- YEAH, z.s.
- Yacht club Slezská Harta z.s.
- YACHT CLUB REGENT z.s.
- YMCA Setkání
- YACHT CLUB BOHEMIA z. s.
- YZENGRIN z. s.
- YMCA Neveklov "v likvidaci"
- Yachtmeni, z.s.
- Yacht club Lipno z.s.
- Yetti Club Trutnov z. s.
- Your Freestyle, o.s. v likvidaci
- Y-Club, z.s.
- YMCA LIBEREC
- YELLOW FEVER CLUB o.s.
- YWCA v České republice v likvidaci
- Yankee and Confederate Artillery Club Y.A.K.A.C.
- Yukiyama dojo, z. s.