Adoption (Article 9 CNB)
Birth-based pathway (Articles 10/11/11bis CNB)
Belgian descent (Article 8 CNB) - jus sanguinis
Historical regime documentation
Marriage-based pathway (Article 12bis §1 4° CNB)
Military service (vestigial)
Naturalization (Articles 12/12bis/13 CNB)
Restoration / recouvrement (Article 24 CNB)
Statelessness/special pathway (Article 10 + Loi 12 mai 2014)
Cessation/loss/revocation (Articles 22, 23, 23/1 CNB)
