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Guidelines for the Princess Rule

Children born in wedlock to a Danish mother and a foreign father during the period 1st January 1961 to 31st December 1978 did not obtain Danish nationality by birth.

As an alternative, Danish mothers were offered to make a declaration by which their child obtained Danish nationality, cf. s. 2(2) of Act No. 117 of 19th March 1978.

Children born during this period whose mother did not make a declaration to this affect may apply for Danish nationality by naturalization according to the “Princess Rule”.

It is a condition that the general requirements for obtaining Danish nationality by naturalisation are fulfilled. This means that an applicant who has been convicted of an offence cannot be naturalised until after a certain period of time, and that the applicant may not owe money to the Danish authorities.

In addition, the applicant must be able to take part in an ordinary conversation in Danish. It is not a condition that the applicant must read or write in Danish and does not have to pass a Danish or nationality test.

It is furthermore a condition that the applicant has been staying in Denmark (not necessarily residing, but visiting) under circumstances indicating some association with the country. In general, one year's stay in total before the age of 22 is required.

The Embassy does not process applications for naturalisation under the Princess Rule. This is done by the Danish Nationality Office (Indfødsretskontoret) in Copenhagen. Please contact Indfødsretskontoret for further advice (it is advisable to ring rather than write, as the response time is very long for emails and letters):

Tel. +45 7226 8700

Monday - Friday 8-10 (UK time)