Pays de la Loire is one of the eighteen regions of France, located on the country's Atlantic coast. It was created in the 1950s to serve as a zone of influence for its capital and most populated city, Nantes, one of a handful of French "balancing metropolises". In 2020, Pays de la Loire had a population of 3,832,120.

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.