The North Branch of the Millers River is a river in southwestern New Hampshire and northern Massachusetts in the United States. It is a tributary of the Millers River, which flows west to the Connecticut River, which in turn flows south to Long Island Sound, an arm of the Atlantic Ocean.
The North Branch is 9.7 km long, 6.4 kmof which are in New Hampshire, with 3.2 km in Massachusetts. If the channel length of 4.7 km through Lake Monomonac were included, the total length would be 14.3 km.
