A child born to two Austrian parents is an Austrian citizen, regardless of the parents' marital status.
If the parents are married at the time of birth, Austrian citizenship of either the mother or the father is sufficient, so long as the child was born after 1 September 1983. For children born prior to that date, the father must have been an Austrian citizen: children born to an Austrian mother married to a non-Austrian father do not qualify.
بص ع حسب ما فهمت من الكلام حسب قانون النمسا فكلام السفاره مظبوط جدا و استحاله تاخد الجنسية من الميلاد لانك متولدتش لاب نمساوى هو خدها بعد انت متولدت بعكس اخواتك فالجنسية بالطريقة دى انساها