- Yacht klub Junior Praha
- Young MBSA
- YARD RESORT, z.s.
- YOUnique z.s.
- Yacht club Ústí nad Labem z.s.
- Yetti Club Trutnov z. s.
- YC Frymburk z. s.
- YMCA LIBEREC
- YMCA DAP
- Yacht Club Lanškroun, z.s.
- Young snipers team, z.s. "v likvidaci"
- Yachtmeni, z.s.
- Yacht klub J.J.J., z.s.
- Yettey v likvidaci
- YACHT CLUB Dvořiště - Lišov, z.s.
- Yoki Home, z.s.
- YACHT CLUB LESKOVEC, z.s.
- YMCA Neveklov "v likvidaci"
- Yacht Club Slezan Opava, z.s.
- YMCA Letohrad
- YMCA Setkání
- Youth for Youth, z.s.
- YACHT CLUB DOKSY, spolek
- Yacht club Letovice
- YACHT CLUB RAZOVÁ z. s.
- Young Challengers, z.s.
- Y-Club, z.s.
- Yankee and Confederate Artillery Club Y.A.K.A.C.
- Youth and World z. s.
- Yachtclub Balaton 24 z.s.
- YACHT CLUB SaS, z.s.
- YAMAMOTO Czech z.s.
- Youth Included, z. s.
- Your Cooking Project, z.s.
- Yobi Take Puraha Shakuhachi Collegium z.s.
- YMCA Ústí nad Labem
- Ynnovations - Institut pro znalostní společnost v likvidaci
- Yamaha Star Czech Republic z.s. "v likvidaci"
- YAKSHA GYM PLZEŇ z.s.
- Yamka Minigolfclub Butovice, z. s.
- YANDEROV, z. s.
- YCR - Jachting Roudnice nad Labem, z.s.
- YachtClub Dyje z.s.
- YOUTH LEADERSHIP EUROPE v likvidaci
- Youth z.s.
- YACHT CLUB A.N.V.
- YACHT KLUB JESENICE z.s.
- Yangame Gym
- YROBAT z.s.
- Young Brothers Gym z. s.