• Australia
    The Australian Koi Association.
     
  • Belgium
    Belgium (de Vlaamse) Koi Society
     
  • Canada
    Canada Koi Club British Columbia
     
  • Germany
    Koi Liebhaber am Niederrhein KLAN
     
  • Netherlands
    Nishikigoi Vereniging Nederland
    Koi 2000
     
  • Singapore
    Singapore Koi Club
     
  • Spain
    AEK - Asociacion Espanola del Koi
     
  • U.K.
    Eastbourne Pond Keeping Club
    Midland Koi Association
     South East of England Section
    Southern Koi Group
    Wirral & District Koi Society
    Yorkshire Koi Society
     
  • U.S.A.

    Associated Koi Clubs of America
    Atlanta Koi Club
    Austin Pond Society
    Michigan Koi & Pond Club
    Mid Atlantic Koi Club
    The Oregon Koi&Water Garden Society
    Pacific Northwest Koi Club Association
    The San Francisco Bay Area Koi Club
    South Arizona Koi Association (SAKA)
    Texas Koi & Fancy Goldfish Society
    Florida East Coast Koi and Watergarden Society
         Gainesville Koi Club