South Branch Baker River
The South Branch in Wentworth, NH
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Location
Country	United States
State	New Hampshire
County	Grafton
Towns	Orange, Groton, Dorchester, Wentworth
Physical characteristics
Source
• location	Orange
• coordinates	43°40′48″N 71°54′53″W / 43.68000°N 71.91472°W / 43.68000; -71.91472
• elevation	2,450 ft (750 m)
Mouth	Baker River
• location	Wentworth
• coordinates	43°50′2″N 71°53′32″W / 43.83389°N 71.89222°W / 43.83389; -71.89222
• elevation	530 ft (160 m)
Length	15.6 mi (25.1 km)
Basin features
Tributaries
• left	Bucks Brook, Merrill Brook, Rocky Brook

The South Branch of the Baker River is a 15.6-mile-long (25.1 km)^[1] river located in western New Hampshire in the United States. It is a tributary of the Baker River, part of the Pemigewasset River and Merrimack River watersheds.

The river rises in the town of Orange, New Hampshire, on high ground north of Mount Cardigan. It flows north through the southwest corner of the town of Groton and the eastern part of Dorchester, enters Wentworth, and drops rapidly to the Baker River.

• List of rivers of New Hampshire