World-wide:
Australia:
- Angelman Syndrome Association of Australia
- Foundation for Angelman Syndrome Therapeutics (FAST) Australia
- Queensland Angelman Association
- Angelman Association of Western Australia
USA:
- Foundation for Angelman Syndrome Therapeutics (FAST)
- Angelman Syndrome Families of Utah
- Angelman Syndrome Foundation (USA)
United Kingdom:
Canada:
Netherlands:
Ireland:
South Africa: