The rivière du Seigneur (English: River of the Lord) is a tributary of the northwest shore of the St. Lawrence River, in the municipality of Les Éboulements, in the Charlevoix Regional County Municipality, in the administrative region of Capitale-Nationale, in the province of Quebec, in Canada.

The water level of the river varies with the seasons and the precipitation; the spring flood occurs in March or April.

The Lord's river rises from Lac Laterrière (length: 0.25 kilometres (0.16 mi); altitude: 298 metres (978 ft)), located in the forest area on the west side of rang Sainte-Catherine road and south of rang Sainte-Marie Road, in Les Éboulements.

The mouth of this small lake is located at: From this source, the course of the Lord's river descends on 10.7 kilometres (6.6 mi), with a drop of 294 metres (965 ft), according to the following segments: The Lord's river flows into Baie des Éboulements, on the northwest shore of the Estuary of Saint Lawrence, in the hamlet Les Éboulements-Center.

This mouth is located at: The name “Rivière du Moulin” was the official form in the 1969 Toponymic Directory.