La Ferté is the name or part of the name of several communes in France:
La Ferté Abbey (French: Abbaye de la Ferté; Latin: Firmitas) was a Cistercian monastery founded in 1113 in La Ferté-sur-Grosne in the present commune of Saint-Ambreuil, Saône-et-Loire, France, the first of the four great daughter-houses of Cîteaux Abbey. It was dissolved in 1791.
The abbey was founded in 1113 by Stephen Harding as the first daughter house of Cîteaux Abbey, the mother house of the Cistercian reform. Along with Morimond Abbey, Clairvaux Abbey and Pontigny Abbey it was one of the four primary abbeys of the Cistercian order to which all other Cistercian houses were affiliated. It stood on a wild site located between the forest of Bragny and the swampy land of the Grosne.
It benefitted greatly from the generosity of the entourage of the Dukes of Burgundy and of the local nobility, especially the family of Gros de Brancion, and rapidly gained wealth and importance.
In 1165-66 it was caught up in the conflicts between Hugh III, Duke of Burgundy, and Counts Gerard of Mâcon and William of Chalon.