These are a collection of Domestic and International Klinefelter Organizations and Associations. If you should come across other Organizations and Associations and would like me to add them, please message me through this website, and I will gladly add them. Thank you, and I hope these resources assist you and your needs.
- Australian Support
- French Association for Chromosomal Conditions
- Klinefelter Educational Support Team (KEST)
- Living with XXY: The Organization
- NHS UK