- Yacht club Jeseník z.s.
- Yggdrasil Yoga z. s.
- Young Glass Symposium z.s.
- YOUnited z. s.
- Yacht Club PARS, z.s.
- Yacht club Labe z. s.
- YACHTCLUB PETROV z.s., v likvidaci
- Youth For Christ Immanuel, z.s.
- YMCA Děčín
- Young MBSA
- YMCA - Živá rodina
- Yale Model Government Europe CZ, o. s.
- Your Cooking Project, z.s.
- YACHTCLUB PASOHLÁVKY z. s.
- YAMAHA TEAM Petr Kalášek z.s. v likvidaci
- Young Leaders CZ z.s.
- Yacht klub Junior Praha
- YOUTH LEADERSHIP EUROPE v likvidaci
- YACHT CLUB NECHRANICE
- YACHT CLUB SALAŠ
- Yvajuk z. s.
- Yettey v likvidaci
- Yacht Club Kozmice - občanské sdružení
- YACHT CLUB DOKSY, spolek
- Yacht Club Staré Město Praha, z.s.
- Yacht Club ARCHER, z.s.
- YMPAL- SPORT, o.s.
- YAD Albert z.s.
- Yoda Mentorship Programme, z.s.
- YMCA Pelhřimov, z. s.
- YC to Stella z.s.
- YMCA Podivín, z. s.
- Yacht club ČSA, v likvidaci
- Yacht club Krnov z.s.
- YMCA v České republice
- Yacht Club Yachta´s z.s.
- YC PanCzech, z.s.
- Yacht Club Nautilus Praha
- YAMAMOTO Czech z.s.
- Yacht Club Lipno nad Vltavou, z.s.
- Young Riders & Horses z.s.
- YARD RESORT, z.s.
- YMCA Husinec
- Yacht Club Řež z.s.
- Yacht club Letovice
- Youth for Youth, z.s.
- Young Czech Arbitration Professionals, z.s.
- Youth z.s.
- Yes z.s.
- Yacht life Seč, z.s.