World Autism Awareness Day 2027

What is World Autism Awareness Day?

World Autism Awareness Day 2027 is on Friday 2 April 2027. It falls on 2 April every year.

World Autism Awareness Day is a United Nations observance held on 2 April each year. It was established by the UN General Assembly in 2007 to encourage every member state to promote the rights of autistic people and their full participation in society. In the UK, the day sits inside April’s World Autism Acceptance Month, run by the National Autistic Society, which asks schools, workplaces and families to move beyond awareness and towards acceptance.

The day is one of the UN’s official international observances, listed on the UN observances page. Its purpose is to draw attention to the barriers autistic people face and to press governments, employers and communities to remove them. The UN frames the day around human rights: equal access to education, work, healthcare and public life, and the right to be understood rather than changed.

The UN’s own description of the day has shifted over the years. Early observances concentrated on raising awareness that autism exists and is common. More recent ones talk about acceptance, appreciation and inclusion, and about the part neurodivergent people play in achieving the Sustainable Development Goals. That shift mirrors what autistic-led organisations and the National Autistic Society have argued for in the UK for some time.

Autism itself is not an illness. The NHS describes it as a difference in how your brain develops that affects how you see and experience the world, something a person is born with, for which there is no treatment or cure but plenty of ways to get support. The National Autistic Society estimates that more than one in 100 people are autistic, which means at least 700,000 autistic adults and children in the UK.

When is World Autism Awareness Day and how is the date set?

The date is fixed. World Autism Awareness Day is always 2 April, whatever day of the week that falls on, so in 2027 it is a Friday, in 2028 a Sunday and in 2029 a Monday. It is not a bank holiday anywhere in the UK and schools and workplaces stay open.

Because 2 April is also the second day of World Autism Acceptance Month, most UK activity is spread across April rather than concentrated on the day itself. If you are planning something for a school or team, the day works well as a launch point for a month of activity.

History of World Autism Awareness Day

The UN General Assembly adopted resolution A/RES/62/139 in 2007, designating 2 April as World Autism Awareness Day. The resolution was tabled by Qatar and adopted without a vote. It encouraged member states to raise public awareness of autism, to recognise the importance of early diagnosis and appropriate support, and to pay attention to the needs of autistic children and their families.

The first observance took place in April 2008. Since then the UN has marked the day with an annual event in New York, more recently held online, with a theme chosen for each year. In the UK, the National Autistic Society originally ran a World Autism Awareness Week around 2 April and later renamed it World Autism Acceptance Week, reflecting feedback from autistic people that awareness on its own was not enough. The charity has since expanded the campaign to cover the whole of April as World Autism Acceptance Month.

Awareness or acceptance?

You will see both words used, and the difference matters to many autistic people. Awareness asks people to know that autism exists. Acceptance asks them to change what they do: to adjust a classroom, to rethink a recruitment process, to make a shop or a GP surgery easier to use, and to take autistic people’s own accounts of their lives seriously.

The National Autistic Society uses identity-first language, that is “autistic people” rather than “people with autism”, because many autistic people see autism as central to who they are. It is a good default for anything you write or say on the day, while respecting any individual who tells you they prefer different wording. The UN still uses the name World Autism Awareness Day for the observance, which is why this page does too, but its own materials now talk about acceptance and inclusion.

What happens in the UK

The National Autistic Society’s April campaign is its largest of the year. The 2026 programme included a Spectrum Colour Walk and a Spectrum Run 10k, a workplace 5k challenge, fundraising at school and a “fundraise your way” option for people who prefer to do their own thing. The charity has confirmed on its campaign site that World Autism Acceptance Month will be back in April 2027 with activities for home, work and school.

Alongside the fundraising, the charity publishes free resources: school packs with lesson plans and activity sheets, workplace resources with a free webinar for employers, and social media assets. Local NAS branches, autism charities, councils and NHS trusts run their own events through the month, from coffee mornings and relaxed cinema screenings to training sessions for staff.

At the UN, the 2026 observance was held online on Thursday 2 April 2026 under the theme “Autism and Humanity – Every Life Has Value”, organised with the Institute of Neurodiversity. The UN had not published a theme for 2027 at the time of writing.

How to take part

You do not need to raise money to mark the day. The most useful things are often small, practical changes that last beyond April.

In schools

• Use the National Autistic Society’s free school resource packs for an assembly or a lesson on what autism is and what acceptance looks like in a classroom.
• Ask autistic pupils, where they are comfortable, what would make the school day easier, and act on at least one answer.
• Review sensory hotspots such as the dining hall, corridors at changeover and assemblies, and offer a quiet alternative.
• Link the day to Neurodiversity Celebration Week in March so the message runs across the spring term.

At work

• Sign up for the National Autistic Society’s workplace resources and webinar, and share them with managers and HR.
• Look at one process, such as job adverts or interview formats, and ask how it could be made clearer and more predictable.
• Invite an autistic colleague or an external speaker to talk, with the autistic person setting the format.
• Enter a team in the workplace 5k challenge if people want a shared goal.

At home and in the community

• Read the NHS and National Autistic Society guidance before sharing posts, and avoid claims about causes or cures.
• Support an autistic friend or family member in the way they ask for, which may mean doing less rather than more on the day.
• Join a local walk, or set up your own fundraiser through the campaign site.
• Use the hashtags #WorldAutismAwarenessDay and #AutismAcceptance if you post, and amplify autistic voices rather than speaking for them.

Related awareness days

• World Autism Acceptance Week, the National Autistic Society’s week around 2 April
• Autism Awareness Month, covering the whole of April
• Autistic Pride Day on 18 June, led by autistic people themselves
• ADHD Awareness Month in October
• Learning Disability Week in June