- Yacht Club Skochovice
- YC PanCzech, z.s.
- YACHT CLUB Dvořiště - Lišov, z.s.
- YACHT CLUB Vysoké Mýto z.s.
- YMCA Letohrad
- Yacht klub Jestřábí, z.s.
- Yoga House, z.s.
- YMCA Neveklov "v likvidaci"
- Yobi Take Puraha Shakuhachi Collegium z.s.
- YogafestZLÍN z.s.
- Y. C. Zlín v likvidaci
- Yoshinkan Nové Město nad Metují, z.s.
- Yoga Surya International, z.s.
- YounGuns Brno, z.s.
- YERBABUENATEAM
- YELLOW FEVER CLUB o.s.
- YACHT CLUB FRYMBURK
- Yacht Club ARCHER, z.s.
- YMCA Brno
- yeah-but-still z.s.
- yo-yo, z. s.
- Yachting CZE, z.s.
- YACHT CLUB RAZOVÁ z. s.
- YACHT CLUB CERE, z.s.
- YMCA SKAUT
- YCR - Jachting Roudnice nad Labem, z.s.
- YACET-MLÁDEŽ, UMĚNÍ A KREATIVITA V EVROPĚ
- YMCA Ostrava-Poruba
- Yacht Club Říčany
- Yacht Club Nautilus Praha
- YMCA Strmilov
- Young Leaders CZ z.s.
- Young Riders & Horses z.s.
- YARD RESORT, z.s.
- YOUNGTIMER - Česká republika, z.s.
- yFilm
- YACHT CLUB Chrášťany z.s.
- Yoga Therapy Praha, z. s.
- YESYES z.s.
- YAMAHA TEAM Petr Kalášek z.s. v likvidaci
- YachtClub Dyje z.s.
- YMCA Orlová
- Yacht klub Junior Praha
- YACHT CLUB MISTRAL
- Yogadana, z.s.
- YogFest z.s.
- Yacht club Rozkoš v likvidaci
- Youth z.s.
- Yacht Club Velké Dářko o.s.
- YC CoolStar, z.s.