AAIDD promotes progressive policies, sound research, education and information on effective practices, and universal human rights for people with intellectual and developmental disabilities.

The Autism Society has affiliates in almost every state. If a local community does not have an affiliate serving its residents, the Autism Society National office supports the needs of individuals and families by providing information and referral services, advocacy, and education.

Under the U.S. Department of Health and Human Services (DHHS), the Office of Disabilities includes the Administration on Intellectual and Developmental Disabilities (AIDD), the Independent Living Administration (ILA), and the Administration for Community Living (ACL). Austism-specific information can also be found here.

The AUCD links people to a network of interdisciplinary centers advancing policy and practice for and with individuals with developmental and other disabilities, their families, and communities.

NACDD is the national association for the 56 Councils on Developmental Disabilities (DD Councils) across the United States and its territories. Each state has a DD Council and receives federal funding to support programs that promote self-determination, integration, and inclusion for all people in the United States with developmental disabilities.

The National Downs Syndrome Society is the leading human rights organization for all individuals with Down syndrome. They work toward a future where all people with Down syndrome have opportunities to enhance their quality of life and turn their aspirations into realities.