The North Branch of the Sugar River is a 10.1-mile-long (16.3 km)[1] river located in western New Hampshire in the United States.

The North Branch of the Sugar River begins at the confluence of Sawyer Brook and Stocker Brook in the town of Grantham, New Hampshire.

In Croydon, the river's flow is interrupted by Spectacle Pond, a 40-acre (16 ha) two-lobed lake.

New Hampshire Route 10 follows the North Branch for nearly its entire length.

This article related to a river in New Hampshire is a stub.