The Henley Passport Index - a project by citizenship planning firm Henley & Partners Citizens, which covers 199 different passports and 227 destinations - is based on data from the International Air Transport Authority.
The Australian passport currently gives holders access to 183 nations without having to pay a fee or pre-apply for a visa before arriving.
It comes as demand for Australian citizenship reaches never-before-seen levels, with the federal government revealing in August close to 189,000 people were waiting for their citizenship applications to be processed.
