Aged and Disability Advocacy Australia (ADA Australia), formerly known as Queensland Aged and Disability Advocacy Inc (QADA), is a not-for-profit, independent, community-based advocacy and education service, jointly funded by the Commonwealth and State governments.

ADA Australia assists older people and people with disability to understand and exercise their rights and responsibilities, as well as resolve their aged care and community care issues (in both home and residential aged care settings), through free and confidential information, education and client directed advocacy support.

ADA Australia also provides a guardianship advocacy service to support adults whose capacity is in question with guardianship and administration matters, including support before the Queensland Civil and Administrative Tribunal (QCAT).