It is possible to hold citizenship of two or more countries if the law of those countries allow. This is known as dual, or multiple, citizenship.
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?
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 your 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.
See: Citizenship and travel
Further information on dual citizenship, Australian passports and consular assistance is available from the Department of Foreign Affairs and Trade Travel information for dual nationals.