People can become dual citizens automatically, or after being granted citizenship of another country.
For example, an Australian citizen may automatically gain citizenship of another country through marriage, while a permanent resident of Australia may become a dual citizen by becoming an Australian citizen.
Prior to 4 April 2002, Australian citizens who became citizens of another country lost their Australian citizenship automatically.
Can you become a dual citizen in Australia?
Australia allows its citizens to hold dual nationality. Other countries may not. To check if your country allows its citizens to hold dual or multiple citizenships, contact the embassy or consulate of that country in Australia.
Using an australian passport
Australian citizens have right of entry to Australia and an Australian passport is the preferred and most conclusive proof of that right.
Dual nationals should use an Australian passport to enter and depart Australia. Other current passports can be used for travel when outside Australia if desired.
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