Magog River
General data
- Name: Magog River
- Water system: St. Lawrence River
- Water type: River
- Progression: Saint-Francois River -> Lake Saint Pierre -> St. Lawrence River -> Gulf of St. Lawrence -> Atlantic Ocean -> Planet Earth
- Climates: Continental
- Continents: North America
- Countries: Canada
The Magog River, or Sekosonotek in Abenaki, is a river that drains Lake Memphremagog. It is a small river running through the territories of the cities of Magog and Sherbrooke, in the administrative region of Estrie, in Quebec, in Canada. It runs along a southwest–northeast axis. Having its source in lake Memphremagog, it crosses lake Magog and empties into Saint-François River, in the city center of Sherbrooke.