The Baker River, or Asquamchumauke[1] (an Abenaki word meaning "salmon spawning place"),[2] is a 36.4-mile-long (58.6 km)[3] river in the White Mountains region of New Hampshire in the United States.

The river traverses the towns of Warren, Wentworth, and Rumney.

The Baker River's name recalls Lt. Thomas Baker (1682–1753), whose company of 34 scouts from Northampton, Massachusetts, passed down the river's valley in 1712 and destroyed a Pemigewasset Indian village.

Along this river on April 28, 1752, John Stark and Amos Eastman were captured by Abenaki warriors and taken to Saint-François-du-Lac, Quebec, near Montreal.

Tributaries greater than 5 miles (8.0 km) long, listed from upstream end to downstream end of Baker River: A large fish hatchery is in the Baker River valley in the town of Warren.