- Youth for Youth, z.s.
- YELLOW LINE z.s.
- Yacht Club Kotva Praha, z.s.
- YACHT CLUB A.N.V.
- YMCA Nejdek
- YCR - Jachting Roudnice nad Labem, z.s.
- Yacht club Letovice
- Yacht Club Skochovice
- Yacht Club Actinet v likvidaci
- youmove z.s.
- YARD RESORT, z.s.
- Youngtimer Cars Club, z.s.
- YounGuns Brno, z.s.
- YACHT club Jablonec n.Nisou
- YORE - Občanské sdružení přátel historie
- YACHT CLUB SALAŠ
- Yacht Club Kovářov z.s.
- Yacht club Krnov z.s.
- YMCA Ostrava-Poruba
- Yoda Mentorship Programme, z.s.
- Y-Club, z.s.
- YWAM ČR z.s.
- YOUNGTIMER CLASSIC SPORT CARS CLUB, o.s.
- YPO Czech Chapter z. s.
- YMCA Podivín, z. s.
- Yankee and Confederate Artillery Club Y.A.K.A.C.
- YAHÚ Team Kostelec, z.s.
- Ýpsilon
- YIMBY Praha, z.s.
- YMCA Husinec
- YACHT CLUB CERE, z.s.
- YMCA Děčín
- Yoga retreat club z.s.
- YMCA Orlová
- YMPAL- SPORT, o.s.
- YC CoolStar, z.s.
- YACET-MLÁDEŽ, UMĚNÍ A KREATIVITA V EVROPĚ
- YACHT KLUB ORLÍK - BOR z.s.
- YMCA Letohrad
- Yacht Club Solenice, z. s.
- Y - Open, z.s.
- Yacht life Seč, z.s.
- YMCA Ústí nad Labem
- Yvajuk z. s.
- Yacht klub Strážnice, z.s.
- You can do it!, z.s.
- YC GRAF o.s. v likvidaci
- Young Czech Arbitration Professionals, z.s.
- YMCA Hradec Králové
- Young Leaders CZ z.s.