Cloyes-sur-le-Loir (French pronunciation: [klwa syʁ lə lwaʁ], literally Cloyes on the Loir) is a former commune on the River Loir, a few kilometres south of the town of Châteaudun in the department of Eure-et-Loir in northern France.

On 1 January 2017, it was merged into the new commune Cloyes-les-Trois-Rivières.

[2] It was the home of Stephen of Cloyes, a leader of the Children's Crusade.

Mezzo-soprano Juliette Borghèse was born in the town.

This Eure-et-Loir geographical article is a stub.