Liss wrote:Christophe: Do you know where I can find info about the effect under Australian law of giving up the citizenship, as you mentioned?
Section 17 of the Australian Citizenship Act 1948, which prescribed the loss of Australian citizenship to a citizen who voluntarily acquired the citizenship of another country, was repealed in 2002. Subsequent changes have been made and incorporated into the Australian Citizenship Act 2007, although these changes are not relevant to your situation, and currently a citizen who acquires the citizenship of another country does not lose his or her Australian citizenship under Australian law.
The
Australian Department of Immigration and Citizenship website carries useful information, including links through to the 2007 Act. The
Reader's Guide to the Australian Citizenship Act 2007 is a good place to start.
As to the Spanish situation, it seems to be a bit mysterious. Part of the problem in finding out information may be that naturalisations are conducted by local authorities rather than centrally. Someone here may know more. But I
think that you would have to renounce all other citizenships in front of a Spanish judge or similar, and that once you become a Spanish citizen the Spanish authorities would regard you as solely Spanish: however, I don't think that you would be required to renounce your Australian citizenship formally (i.e. according to Australian law). Such a situation is not particularly unusual: the USA, for example, takes a very similar view for its dual US—other citizens.
The article posted by Sakura seems to be more about loss and re-acquisition of Spanish citizenship, but I might have missed something.
When making enquiries about Spain's attitude to dual citizenship, remember that a country not
recognising dual citizenship is not the same as a country
forbidding it or taking active steps to avoid it (again, for example, the US doesn't really
recognise that one of its citizens may be the citizen of another country, but there are plenty of dual US citizens, and the US accepts that this it the case; the same applies to many other countries).