||AAIDD (American Association on Intellectual and Developmental Disabilities) promotes progressive policies, sound research, effective practices, and universal human rights for people with intellectual and developmental disabilities.
||AAPD (American Association of People with Disabilities) is a non-profit, non-partisan, cross-disability organization whose goals are unity, leadership, and impact.
||ADAPT (American Disabled for Attendant Program Today) focuses on promoting services in the community for people with severe disabilities.
||ANCOR (American Network of Community Options Resources) since 1970 has been the preeminent voice in Washington on behalf of private agencies that provide services and supports to people with mental retardation and other developmental disabilities.
||AOTA (American Occupational Therapy Association) focuses on the therapeutic use of purposeful activity to help people live as fully and as normally as possible within their own environment.
||APA (American Psychological Association) is the largest scientific and professional organization representing psychology in the United States. It works to advance psychology as a science, as a profession, and as a means of promoting human welfare.
||Arc (Association for Retarded Citizens) works to improve the lives of children and adults with mental retardation and their families, including securing expanded services and benefits as well as research and prevention programs for these citizens and their families.
||ASA (Autism Society of America) has, as its mission, to promote lifelong access and opportunities for persons within the autism spectrum and their families, to be fully included, participating members of their communities through advocacy, public awareness, education and research related to autism.
|Autism Network International
||Autism Network International is a self-help and advocacy organization for people with autism.