Seux is a French commune in Picardy. In 2012, 167 people lived there. The commune is stuated on a plateau, about 16 kilometres (9.9 mi) from Amiens. It is known for its church, Saint Fiacre, which was built in the 18th century. Robert de Louvencourt (1880-1952), which was in the French legion d'honneur, was born in Seux.