| Argentina | → www.asdra.com.ar |
| Australia | → www.downssa.asn.au |
| Australia | → www.dsansw.org.au |
| Brazil | → www.fsdown.org.br |
| Canada | → www.cdss.ca |
| Canada | → www.dsrf.org |
| India | → www.downsyndrome.in |
| Israel | → www.yated.org.il |
| Japan | → www.jdsn.ac.affrc.go.jp |
| Mexico | → www.fjldown.org.mx |
| New Zealand | → www.nzdsa.org.nz |
| Puerto Rico | → www.sindromedown.org |
| Saudi Arabia | → www.gulfkids.com |
| Singapore | → www.downsyndrome-singapore.org |
| South Africa | → www.downsyndrome.org.za |
| USA | → www.ndsccenter.org |
| USA | → www.ndss.org |
| USA | → www.imdsa.org |
| Venezuela | → www.avesid.org |
www.dhg.org.uk
www.ds-int.org
www.ds-health.com
www.dsmig.org.uk
www.edf-feph.org
www.institutlejeune.org
www.mosaicdownsyndrome.org
www.mosaicdownsyndrome.com
www.worlddownsyndromeday.org