Do France passport holders need a visa to visit BE?

No. French citizens do not need a visa to visit Belgium. Both France and Belgium are EU and Schengen members, so French nationals travel under EU freedom of movement and may enter with just a valid national ID card or passport, with no time limit on tourist stays. A France ordinary-passport holder needs no visa, ETIAS authorisation, or pre-registration to enter Belgium for tourism or a short visit. France and Belgium are both EU member states inside the borderless Schengen area, so French citizens enjoy full freedom of movement. They can enter and stay using either a valid French national identity card or a valid passport - a passport is not strictly required. There are normally no systematic checks at the internal France-Belgium border, although carriers and authorities can request proof of identity at any time, and temporary border controls may be reintroduced in exceptional circumstances. The Schengen 90/180-day short-stay limit and the new ETIAS travel authorisation apply only to non-EU visa-exempt nationals; they do NOT apply to EU citizens such as the French, who face no fixed cap on the duration of a visit. For stays expected to exceed three months, an EU citizen should report to the local Belgian municipality (commune) to obtain a registration document (Annex 19 / attestation), but this is a residence formality, not an entry visa. The only practical requirement is that the travel document be valid (not expired) on the day of travel and throughout the stay; Belgium imposes no minimum-residual-validity rule for EU/Schengen documents.