- YounGuns Brno, z.s.
- YMCA Jindřichův Hradec
- Youth Business Network
- YACHT CLUB RAZOVÁ z. s.
- YACHTCLUB PASOHLÁVKY z. s.
- YOUNGTIMER CLASSIC SPORT CARS CLUB, o.s.
- Youth in Czech Republic, z.s.
- yFilm
- YACHT CLUB LESKOVEC, z.s.
- Yacht Club Baník Most z. s.
- Yacht club Jeseník z.s.
- YAD Albert z.s.
- Youth Europa Czechia z.s.
- YMCA Ústí nad Labem
- Young Leaders CZ z.s.
- YOGASHRAMA, spolek
- Youth Included, z. s.
- YPO Czech Chapter z. s.
- YACHT CLUB SALAŠ
- YACET-MLÁDEŽ, UMĚNÍ A KREATIVITA V EVROPĚ
- YELLOW LINE z.s.
- Young Riders & Horses z.s.
- yo-yo, z. s.
- YMCA Nejdek
- Yoga Surya International, z.s.
- YARD RESORT, z.s.
- Young MBSA
- Yacht Club Slezan Opava, z.s.
- Yorkshire Terrier klub chovatelů a jeho přátel, z.s.
- Ygdrassil, z.s.
- YFU CZ, z.s.
- YMCA Třebechovice
- YACHT CLUB MILEVSKO z.s.
- Youth for Youth, z.s.
- YACHT club Jablonec n.Nisou
- Yale Model Government Europe CZ, o. s.
- Yacht club Bystrc Brno z.s.
- Yacht Club Říčany
- Yukiyama dojo, z. s.
- YMCA LIBEREC
- Yoki Home, z.s.
- Yak55 Aerobatic Team z.s.
- YANDEROV, z. s.
- YES o.s.
- Youth z.s.
- Yacht Club Kovářov z.s.
- YMCA v České republice
- Yvontek, z.s. v likvidaci
- YogFest z.s.
- YACHT CLUB NECHRANICE