Yes, cousin marriage is legal in Belgium under strict conditions. The Civil Code permits marriages between first cousins if they obtain prior judicial authorization, while second cousins face no restrictions. Since 2023, applicants must submit genetic counseling certificates to the Federale Overheidsdienst Justitie to assess potential hereditary risks.
Key Regulations for Cousin Marriage in Belgium
- Judicial Authorization Required: First cousins must petition the Familierechtbank (Family Court) for approval, which evaluates health, genetic, and social factors. Approval is discretionary and not guaranteed.
- Genetic Counseling Mandate: Since 2026, all first-cousin applicants must provide a genetic risk assessment from an accredited Belgian laboratory, per Wet van 10 mei 2023 (Art. 146bis).
- No Restrictions for Distant Relatives: Marriages between second cousins or more distant relatives are permitted without judicial or medical prerequisites.