Lorris (French pronunciation: [lɔʁis]) is a commune in the Loiret department in north-central France.

It is east of the Foret d'Orléans and gave its name to the Massif de Lorris, the easternmost part of the Orléans forest.

On 30 October 1242, the Peace of Lorris was signed by Raymond VII, Count of Toulouse and Louis IX, King of France.

The two men renewed the Treaty of Paris which they had already concluded on 12 April 1229.

The treaty put an end to the sufferings of the Albigeois.