The National Association of Councils on Developmental Disabilities (NACDD) is the leading national membership association for the 56 State Councils on Developmental Disabilities (DD Councils) across the United States and its territories. NACDD works to create inclusive and welcoming communities for people with Intellectual and Developmental Disabilities (I/DD), their families, and allies by advocating for policy change. NACDD's vision is a society where individuals with developmental disabilities are fully integrated and have equal opportunities to achieve their potential, make their own choices, and exercise their civil rights.

Their mission is to ensure that individuals with I/DD can live the life they desire within their communities. NACDD takes on a crucial role by providing leadership, education, and attention to national issues and policies affecting people with I/DD. They advocate to Congress and federal government agencies, secure funding for State DD Councils, and offer technical assistance to support their success.

Through collaborative relationships, NACDD drives national public policy agendas, promotes integrated employment opportunities, and engages dedicated professionals and volunteers across the country. They strive to improve outcomes within states, build communities of practice among State/Territorial DD Councils, and expand awareness for developmental disabilities. NACDD's members, the State Councils on Developmental Disabilities, focus on innovative solutions, advocating for empowering policies, and creating supportive and welcoming communities for individuals with I/DD.

NACDD is governed by an elected Board of Directors, which includes professionals, individuals with I/DD, and family members. As part of the Developmental Disabilities Network, NACDD plays a crucial role in the DD Act, focusing on empowering individuals with developmental disabilities, promoting self-sufficiency and inclusion, and ensuring quality assurance in community programs. Overall, NACDD is committed to shaping the future by driving initiatives, advocating for change, and building a society that values the full inclusion and potential of individuals with developmental disabilities