The Damnée River (in French: rivière Damnée) flows entirely in the municipality of Saint-Damase-de-L'Islet, in the L'Islet Regional County Municipality, in the administrative region of Chaudière-Appalaches, in the province of Quebec, in Canada.

The Damnée river takes its source from streams descending the eastern slope of Mont Fournier which is located in the municipality of Saint-Damase-de-L'Islet, very close to the limit of the municipality of Saint-Aubert, in the heart of Notre Dame Mountains.

[1] From its source, the Damnée river flows over 16.7 kilometres (10.4 mi) in a forest zone, divided into the following segments: The confluence of the Damnée river is located in the municipality of Saint-Damase-de-L'Islet, at 2.7 kilometres (1.7 mi) downstream of the limit of Tourville.

This confluence is 12.8 kilometres (8.0 mi) east of Lac Sainte-Anne (located in Tourville), at 9.7 kilometres (6.0 mi) north of village of Tourville.

[1] The toponym Damnée river was formalized on December 5, 1968, by the Commission de toponymie du Québec.