Acquired brain injury (ABI) is a common cause of disability among people of all ages. Disabilities related to ABI are often complex and may cause limitations in many areas of life. This bulletin examines ABI in Australia: its causes, the prevalence and severity of disability related to ABI, and the needs of people with ABI in various aspects of life. It also provides a profile of people with ABI who currently use specialist disability services funded under the Commonwealth State/Territory Disability Agreement.