The Myositis Association Australia (MAA) is a volunteer-led organisation supporting people living with myositis, a rare group of inflammatory muscle diseases. It works to improve quality of life through support, education, awareness, advocacy and fundraising for Australian-based myositis research. The Association welcomes people across Australia to connect with others who understand their experiences and to take part in its community.

MAA offers general advice through its contact and information line, as well as regular events, online learning sessions and conferences. Members can access a resource hub, information about treatments, clinical trials and studies, and guidance on finding health professionals. The website also provides resources for carers, mental health links, patient stories, research updates and information for health professionals. Educational materials cover different forms of myositis, including inclusion body myositis, dermatomyositis, polymyositis and juvenile myositis.

People can join or renew membership, share their stories, volunteer, donate or organise fundraising activities. MAA also publishes news, research information and media updates to raise awareness and help strengthen support for the myositis community.