South Newbury is an unincorporated community in the town of Newbury in Merrimack County, New Hampshire, United States.

It is located along New Hampshire Route 103, 3 miles (5 km) southeast of the main village of Newbury.

Route 103 continues east to the towns of Bradford and Warner.

South Newbury has a separate ZIP code (03272) from the rest of the town of Newbury.

This New Hampshire state location article is a stub.