Australian Notary Publics can 'notarise' documents for use overseas. This is different from legalising.

Many receiving authorities are satisfied with a notarised document. They may not ask you to take the extra step to get it legalised.

We can't tell you what an overseas authority wants. Always ask them to specify what they need.

Courtesy: DFAT / Smartraveller /
Read More: https://www.smartraveller.gov.au/consular-services/notarial-services/documents