- Yvonne Lombardo
- YOGASHRAMA, spolek
- Yogadana, z.s.
- YMCA LIBEREC
- YACHT CLUB FRYMBURK
- Young Initiative z.s.
- YACHT CLUB KOLODĚJE
- Yerlango o.s.
- YELLOW LINE z.s.
- Yacht Club ROLLING BOTTLES, z.s.
- Yacht Club Lipno nad Vltavou, z.s.
- YCR - Jachting Roudnice nad Labem, z.s.
- YMCA Neveklov "v likvidaci"
- Youth For Future, z.s.
- YACHT CLUB A.N.V.
- Youth Europa Czechia z.s.
- YOUR FREESTYLE ACADEMY z.s.
- yeah-but-still z.s.
- Yacht Club Řež z.s.
- YOUnique z.s.
- YACHT CLUB KLADNO z.s.
- YAGANA Lucky zone, z.s.
- YMCA Pelhřimov, z. s.
- Young Leaders CZ z.s.
- Yacht club D.I.M. Bezdrev z.s.
- Yettey v likvidaci
- Yetti Club Trutnov z. s.
- YACHT CLUB BOHEMIA z. s.
- YPG Evropa, z.s. v likvidaci
- YMCA Podivín, z. s.
- Yoga Slavičín, z.s.
- YWCA v České republice v likvidaci
- YC PanCzech, z.s.
- Yacht club Rozkoš v likvidaci
- YOUTH ROMA PARLIAMENT, z. s. v likvidaci
- YachtClub Dyje z.s.
- YMCA Orlová
- Yggdrasil Yoga z. s.
- YMCA Letohrad
- Yoga Surya International, z.s.
- Yacht club Krnov z.s.
- Youth in Czech Republic, z.s.
- Yacht Club Lanškroun, z.s.
- You can do it!, z.s.
- Yoga retreat club z.s.
- YC Lískovec z.s.
- YPO Czech Chapter z. s.
- YACHT CLUB MISTRAL
- Yacht club Jeseník z.s.
- Yacht club Lipno z.s.