• Australia
  The Australian Koi Association.
  Koi Society of Australia
  Koi Society of Western Australia
  
• Belgium
  Koi@home Koi Show
  Koi @ Home
  Koi Secrets
  
• Canada
  Canada Koi Club British Columbia
  Pacific Northwest Koi Club Association
  
• Denmark
  Dansk Koi Klub
  KoiDanmark Club
  
• Germany
  Koi Liebhaber Am Niederrhein KLAN
  
• Netherlands
  Nishikigoi Vereniging Nederland
  Holland Koi Show (NVN)
  Koi 2000
  
• Japan
  Zen Nippon Airinkai
  
• Singapore
  Singapore Koi Club
  
• Spain
  AEK - Asociacion Espanola del Koi
  
• South Africa.
  South African Koi Keepers Society
  
• Sweden.
  Kramors Koi Klub
  
• Switzerland.
  Koi Switzerland
  
• U.K.
  Birmingham & West Midlands BKKS
  Bristol & West Koi Club
  British Koi Keepers Society BKKS main Site
  Cambridge Koi Club BKKS
  Celtic Koi CLub
  Cheshire & Borders BKKS
  Dorset Koi Keepers
  Eastbourne Pond Keeping Club
  East Midlands Koi Club
  East Pennine BKKS
  East Yorkshire Koi Society
  Essex BKKS
  Hereford & District Koi Club
  Ireland BKKS
  Leicestershire
  Middx & Surrey borders BKKS
  Midland Koi Association
  Northants BKKS
  North East BKKS
  Northern Koi Club
  Northern ZNA UK
  North Wales Koi Club
  Nottingham and District Koi Club
  South Essex Koi Club
  South Hants Koi Club
  South of England Koi Club/ZNA
  South Kent Koi Club
  Wessex & Southern Koi Society
  West Midlands ZNA Chapter
  West Wales
  Wirral & District Koi Society
  Worthing BKKS
  Yorkshire Koi Society
  Yorkshire BKKS
  
• U.S.A.
  Associated Koi Clubs of America
  Atlanta Koi Club
  Austin Pond Society
  The Central Florida Koi Show.
  East Coast Florida Koi Club
  Lone Star Koi Club
  Inland Empire WaterGarden CLub
  Michigan Koi & Pond Club
  Mid Atlantic Koi Club
  North Idaho Koi Keepers
  Northern California ZNA Chapter
  Northern Midwest ZNA
  The Northwest Koi & Goldfish Group
  The Oregon Koi&Water Garden Society
  Pacific Northwest Koi Club Association
  Koi Club of San Diego
  Piedmont Koi & Watergarden Society
  The San Francisco Bay Area Koi Club
  Shasta Koi & Watergarden Club
  South Arizona Koi Association (SAKA)
  Southern Koi Association ZNA
  Texas Koi & Fancy Goldfish Society
  Triad Koi & Watergarden Society
  Ventura County Koi Society.
  ZNA America