The Abbey of Fontenay is a former Cistercian abbey located in the commune of Marmagne, near Montbard, in the département of Côte-d'Or in France. It was founded by Saint Bernard of Clairvaux in 1118, only a few years after he left Cîteaux Abbey to found Clairvaux Abbey. Located in a small forested valley 60 kilometres northwest of Dijon, it achieved great prosperity in the twelfth and thirteenth centuries. Fontenay enjoyed the protection of the Kings of France but was plundered in the Hundred Year's War and the Wars of Religion. Later, its fortunes declined, and the refectory was demolished by the monks in 1745. The abbey was closed in the French Revolution, and became a paper mill until 1902, owned for most of its period of operation by the Montgolfier family.