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Adult Autism Awareness Day

Help spread awareness about Adult Autism this April 2nd by joining in on the conversation for Adult Autism Awareness Day!

Sunday

April 2027

Last updated February 7, 2026 · by the Holiday Calendar Team

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YEARLY DATEApril 18

OBSERVED INUnited States

CATEGORYAwareness

SUBCATEGORYDisability

INTRO

Introduction

PHOTO

On April 18, join in to celebrate Adult Autism Awareness Day! This special day has been celebrated since 2006 and was created to raise awareness about adults with autism spectrum disorder (ASD). It is also a chance to recognize the contributions that these individuals make in society, as well as show support for their families. The goal of this day is to educate people about autism and provide resources and support for those living with it. So let's come together on April 18th to help spread understanding and acceptance of ASD!

TIMELINE

Adult Autism Awareness Day Timeline

Initial Autism Identification

Eugene Bleuler, a Swiss psychiatrist, first used the term "autism" to describe symptoms of schizophrenia.

Autism Defined as Separate Condition

Leo Kanner, an U.S. psychiatrist, distinguished autism as a separate condition from schizophrenia.

Research on Adults with Autism

The need for studies and resources focused towards adults with autism began to be recognized within professional circles.

Autism Included in DSM

Autism officially included as a disorder in the Diagnostic and Statistical Manual of Mental Disorders (DSM-III).

First Adult Autism Awareness Day

First celebrated in 2006, Adult Autism Awareness Day aims to raise awareness about adults with autism spectrum disorder (ASD).

Continued Advocacy and Awareness

Advocacy groups continue to push for greater awareness and resources for Adults with Autism, further mainstreaming the discussion about ASD.

GET INVOLVED

How to Celebrate Adult Autism Awareness Day

Educate yourself

Take some time to learn more about autism in adults. Read blogs, listen to podcasts, watch documentaries or look for local events that discuss adult autism.

VOLUNTEER

Volunteer

Look for volunteer opportunities in your area where you can help adults with autism. This could be anything from helping out with a local event, to providing support in a classroom setting.

REACH

Reach out

If you know someone who is living with autism, reach out and let them know that you are there for them. Offer your support and let them know that you care.

DONATE

Donate

Support organizations that advocate for adults with autism. Donating money or time will go a long way to help those who are affected by the disorder.

SPREAD

Spread awareness

Talk to your friends and family about autism in adults and spread this important message as far and wide as possible.

WHY THIS DAY MATTERS

Why Adult Autism Awareness Day is Important

Improving resources

Raising awareness also allows us to better understand the needs of those with autism in order to provide more appropriate resources and support. Adult Autism Awareness Day hopes to bring attention to the unique issues faced by adults on the spectrum and continue improving resources available to help them navigate their lives successfully.

Raising awareness of autism in adults

Adult Autism Awareness Day is an important day for raising awareness about autism in adults. Many people are unaware that autism isn’t just a disorder that affects children – it continues to be a disabling condition in adulthood too. Raising awareness helps people understand the unique needs and challenges faced by those with autism into adulthood.

Encouraging acceptance

The world can often be less than understanding of people with disabilities, yet understanding breeds acceptance. Adult Autism Awareness Day aims to educate society so that those living with autism can feel accepted and embraced for who they are instead of faced with ignorance, stigma or discrimination.