Every year, autism organisations around the world celebrate the day with unique fundraising and awareness-raising events.
The Minister of State for Disabilities here has marked World Autism Awareness Day by thanking those who work with people with the condition.
Finian McGrath says they're incredible for helping people with Autism to reach their full potential.
Funding of over 1.6 billion Euro will be provided to the health authority this year for disability services.
The Chairperson of Waterford Autism Social and Sports Action (WASSA) Suzanne O’Mahony.
She describes the work they do.
"It was set up by local parents in 2009 to provide a variety of sports and social activities for kids that are on the spectrum that may have been missing out on mainstream activities."
"We do a host of activities and workshops for children so they can hopefully integrate fully into mainstream activities down the road at a later stage."