Pennamaquan River
General data
- Name: Pennamaquan River
- Water system: Atlantic Ocean
- Water type: River
- Progression: Cobscook Bay -> Bay of Fundy -> Gulf of Maine -> Atlantic Ocean -> Planet Earth
- Climates: Temperate
- Continents: North America
- Countries: United States of America
The Pennamaquan River is a short, 8.1-mile (13 km) river in the U.S. state of Maine, draining from medium-sized, low-elevation Pennamaquan Lake into Cobscook Bay.