The Château de Challeau (or Challuau) refers to two châteaux in the neighbouring communes of Dormelles and Villecerf, near Fontainebleau in the department of Seine et Marne, France.
It has a 6m high and 1.3m thick curtain wall which surrounds an area approximately 30m by 24m, with rounded watchtowers at the corners.
The second château was built near Fontainebleau in 1540s, for Anne de Pisseleu, duchesse d'Étampes, mistress of Francis I of France, to a design by Pierre Chambiges.
Anne de Pisseleu's niece, Marguerite Hurault, sold Dormelles and Challeau to Pierre Le Charron, a courtier of King Henry IV, in the 17th century, and it was altered to become the home of Gabrielle d'Estrées (for Voltaire composed his poem La Henriade).
Louis XIII later permitted Claude Le Charron to commemorate his term as French ambassador at the Castel Sant'Angelo in Rome by renaming the castle as the Château de Saint-Ange.