Renaison (French pronunciation: [ʁənɛzɔ̃]) is a commune in the Loire department of central France.

In 1294, the difficulties between the secular and ecclesiastical co-reigning lords of the country, the Counts of Forez and the prior of Ambierle, were resolved by an agreement regulating the rights of justice, in particular.

In the 15th century, the great financier of King Charles VII, Jacques Coeur, acquired the eastern Renaison area.

After the Congress of Vienna in 1815, marking the end of more than two decades of the Revolutionary/Napoleonic Wars, Renaison began to recover and become prosperous from its vineyards, mills on the river, crafts and shops, allowing a bourgeoisie to emerge.

In 1888, city of Roanne started the construction of the gravity type La Tache dam which was completed in 1891.

During the First World War, of the 423 drafted inhabitants of Renaison, 69 were killed and 17 were recorded as missing.

On August 10, 1944, German soldiers set fire to several buildings in retaliation for the resistance which was well established in Renaison.

Mayors of Renaison: The company "Délice du Palais" destroyed by fire July 30, 2007, was rebuilt on the area of La Grange Vignat and opened February 6, 2009 by Hervé Novelli, Secretary of State for Trade, Crafts, SMEs, tourism and services.