Information Relating to Minor Applicants
Children under the age of 16 may enter Belgium without their own individual travel document if accompanied by one of their parents, grandparents or by a guardian, provided this child is of the same nationality as the child and is included on the passport of the parent, grandparent or guardian. Children for whom this is not the case must have their own valid travel document containing a visa if necessary.

Minors travelling alone or with applicants other than their parents require a statement of authorisation to travel signed by both parents or by a legal guardian. This statement must be authenticated by the local authorities. Minors travelling with one of their parents also need this authorisation if their parents are divorced.
In some cases, schoolchildren or students are required to have a statement from their school to the effect that they are on holiday and are not missing classes.