The Ruisseau des Meules (in English: millstone stream) is a tributary of the west bank of the rivière du Moulin whose current flows on the west bank of the Chaudière River; the latter flowing northward to empty on the south shore of the St. Lawrence River.

It flows in the municipality of Saint-Alfred, in the Robert-Cliche Regional County Municipality, in the administrative region of Chaudière-Appalaches, in Quebec, in Canada.

From its source, the Meules stream flows over 1.0 kilometre (0.62 mi), with a drop of 170 metres (560 ft), divided into the following segments: The Meules stream empties on the west bank of the Moulin river, in the municipality of Saint-Alfred.

The origin of the toponym "Ruisseau des Meules" is linked to the toponym rivière du Moulin by being associated with the molding of the grains.

[2] The toponym "Ruisseau des Meules" was made official on March 6, 1970, at the Commission de toponymie du Québec.