The National Autistic Society Guernsey Branch (NAS Guernsey Branch) champions the rights and interests of all people with autism in Guernsey, Alderney, Herm and Sark, and ensures that they and their families receive quality services appropriate to their needs. The NAS Guernsey Branch is the islands? leading charity for people on the Autistic Spectrum and their families.

The NAS Guernsey Branch is a voluntary organisation, which aims to ensure that all people with autism and related conditions, and their carers, have access to appropriate life long learning, care and support. The Branch seeks to achieve this through directly providing services, working with other agencies and advocating for and on behalf of people with autism and their carers.