Gridley River

General data
- Name: Gridley River
- Water system: Merrimack River
- Water type: River
- Progression: Contoocook River -> Merrimack River -> Gulf of Maine -> Atlantic Ocean -> Planet Earth
- Climates: Temperate
- Continents: North America
- Countries: United States of America
Description
The Gridley River is a 6.3-mile-long (10 km) river in southern New Hampshire in the United States. It is a tributary of the Contoocook River, part of the Merrimack River watershed. Most of the river's length is within the town of Sharon.