Regarding your question, it is important to note that the Nationality Law provides three possibilities for acquiring Portuguese nationality by attribution in cases where an individual is born in Portuguese territory to foreign parents: 1. *First possibility:* Individuals born in Portugal to foreign parents acquire Portuguese nationality if at least one of the parents was also born in Portugal and resides there at the time of birth. 2. *Second possibility:* Individuals born in Portuguese territory to foreign parents, provided that, *at the time of birth*, *one of the parents is legally residing in Portugal *or has *been residing in the country for at least one year*, regardless of the residence permit. In this case, to be considered a legal resident, the parent must hold a residence permit with a validity of at least one year. A short-term visa, which only allows a temporary stay in Portugal, does not qualify for this purpose. 3. *Third possibility:* Individuals born in Portugal who do not possess any other nationality may also acquire Portuguese nationality. Based on this information, since you will be residing in Portugal under a D4 visa, you will have legal residence in the country. If, at the time of birth, the parent is legally residing in Portugal and meets the previously mentioned requirements, your child may be eligible to acquire Portuguese nationality by attribution upon request.
