The Château de Nantouillet is a ruined sixteenth-century Renaissance château at Nantouillet in the Seine-et-Marne department of the Île-de-France region.
It was built on the site of an earlier fortress by the French cardinal and politician Antoine Duprat.
There are few remains of the wall, but the location of the towers still appears on a 1783 plan.
Of the three towers still visible, the main one near the entrance is the most imposing. It is clad in brick and has large mullioned windows
