The Canal du Loing (French pronunciation: [kanal dy lwɛ̃]) is a 49.4 km long canal which connects the Seine at Saint-Mammès to the Briare Canal just north of Montargis, in central France.

Philippe II, Duke of Orléans sought letters patent to build the canal in 1720, and it was completed in 1723.

[2] The Canal du Loing is part of the Bourbonnais route from Saint-Mammès on the Seine to Chalon-sur-Saône on the river Saône.

The valley is wooded and pleasant throughout, with lakes resulting from former gravel pits.

Commercial traffic has declined significantly, but the canal remains open all year round to accommodate barges, mostly carrying grain for export.