The South Branch of the Gale River is a 5.1-mile-long (8.2 km)[1] river in the White Mountains of New Hampshire in the United States.

The South Branch rises on the north slope of Mount Lafayette in the town of Franconia, New Hampshire, west of Garfield Ridge.

It drops rapidly to the north and joins the North Branch to form the Gale River at the crossing of U.S. Route 3.

The South Branch provides drinking water for the town of Bethlehem, New Hampshire.

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