The châteaux of the Loire Valley are part of the architectural heritage of the historic towns of Amboise, Angers, Blois, Chinon, Montsoreau, Orléans, Saumur, and Tours along the river Loire in France. They illustrate Renaissance ideals of design in France.

The Loire is the longest river in France and the 171st longest in the world. With a length of 1,006 kilometres (625 mi), it drains 117,054 km2 (45,195 sq mi), more than a fifth of France's land, while its average discharge is only half that of the Rhône.