Lower Normandy (French: Basse-Normandie, IPA: [bɑs nɔʁmɑ̃di, bas -] ⓘ; Norman: Basse-Normaundie) is a former administrative region of France.

[3] The traditional districts of Lower Normandy include the Cotentin Peninsula and La Hague, the Campagne de Caen, the Norman Bocage, the Bessin, and the Avranchin.

That of Vieux was excavated in the 17th century, revealing numerous structures and vestiges bearing testimony to the prosperity of the Caen region.

Nearly one hundred years later, in 1204, King Philip II Augustus of France conquered the region, apart from the Channel Islands.

The region's economy is heavily agricultural, with livestock and dairy farming, textiles and fruit production among its major industries.

Lower Normandy has also been the home of many well-known French authors, including Guy de Maupassant, Marcel Proust, Jules Barbey d'Aurevilly.

Notable Norman language authors connected especially with Lower Normandy include Alfred Rossel, Louis Beuve, and Côtis-Capel.