Losing, retaining and regaining Belgian citizenship


Subject to certain conditions, both adults and minors can lose Belgian citizenship.

There are two possibilities with respect to persons aged 18 and above: either no declaration stating their intention to retain Belgian citizenship (déclaration de conservation/behoudsverklaring) has been made or they have chosen to renounce their Belgian citizenship.

Minors may lose Belgian citizenship if a parent loses Belgian citizenship or if they are adopted by a foreigner.

Persons who have lost Belgian nationality in the past, can regain it under certain conditions.