Australia allows dual citizenship. For example, an Australian citizen can obtain another nationality through marriage.
Similarly, a permanent resident of Australia can obtain Australian citizenship while retaining their nationality of origin. However, the applicant should check whether dual citizenship is allowed in their country of origin or whether, by contrast, would lose its nationality to obtain Australian.
Australian citizens who hold dual nationality, must be used Australian passports to enter and leave the country; this obligation does not prevent them from using other passport out of Australian territory.
Foreigners can apply for Australian citizenship by grant, if any of the following occur:
The applicant is a permanent resident of Australia and meets all eligibility requirements; including the owning four years of legal residence in Australia, including 12 months of permanent residence immediately before making the application for citizenship;
the applicant's spouse of an Australian citizen, or a child, the son of an Australian citizen;
The applicant is a refugee who has entered Australia on humanitarian grounds;
the applicant is a British or New Zealand citizen and has lived in Australia for many years. It can also be a beneficiary of the Migration Plan Commonwealth;
The applicant is a citizen born in Papua before independence in 1975.
In addition, certain legal forms that encourage obtaining Australian citizenship in very specific cases:
Citizenship by descent: they can apply for citizens who were born abroad of a father or mother of Australian citizenship.
Citizenship for adoption: granted to those who have been adopted by an Australian citizen.
Resumption citizenship: accorded to those who have lost their Australian citizenship.
All children born in Australian territory of parents possessing permanent residence of Australian citizenship automatically.
In fact, Australians are born all citizens who were born in Australia after August 20, 1986 of permanent resident parents.
Citizens who were born in Australia after August 20, 1986 to parents who are not permanent residents or Australian citizens may obtain Australian citizenship automatically upon turning 10 years old.
