Acquiring Austrian citizenship by descent
Children acquire citizenship at the time of their birth if their mother is an Austrian citizen. The same applies if the parents are married and only the father is an Austrian citizen.
If the parents are not married and the father is an Austrian citizen, but the mother is a citizen of another state, the child acquires Austrian citizenship by descent if their Austrian father acknowledges paternity within eight weeks following the birth, or if his paternity has been legally established by a court. Paternity can also be acknowledged before the child is born. Where paternity is only acknowledged more than eight weeks after the birth, or where paternity is determined by a court, children can have Austrian citizenship conferred upon them under facilitated conditions.
Where the parents are of different nationalities (one of them being Austrian), and if the principle of descent applies in the other country (as it applies in Austria - see paragraph 1 above), the child becomes a dual citizen. Under Austrian law, the child does not have to decide on their (sole) nationality upon reaching the age of majority. However, the other state involved may require them to make such a decision.
Responsible for the content: Federal Ministry of the Interior