- you were born in Belgium to a Belgian citizen OR;
- you were born abroad AND:
1. your Belgian parent was born in Belgium or in Belgian Congo before 30 June 1960 or in Rwanda or Burundi before 1 July 1962 OR;
2. your Belgian parent was born abroad and makes a declaration, within a period of five years following your birth, requesting that you be granted Belgian nationality. This declaration (declaration d'attribution/toekenningsverklaring) must be submitted to the Belgian embassy or consulate in the main place of residence of your Belgian parent abroad. If the parent lives in Belgium, they should contact the registrar in their municipality. You obtain Belgian nationality on the date upon which the declaration is made.
- OR you were born abroad and your Belgian parent who was born abroad does not submit a "déclaration d'attribution/toekenningsverklaring" within a period of five years following your birth but you were not given another nationality before you turned 18. However, if you were given another nationality before you turned 18, you lose your Belgian nationality.