| Official Name: | South Tamworth, New Hampshire |
| Settlement Type: | Unincorporated community |
| Pushpin Map: | New Hampshire#USA |
| Pushpin Label: | South Tamworth |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | New Hampshire |
| Subdivision Type2: | County |
| Subdivision Name2: | Carroll |
| Subdivision Type3: | Town |
| Subdivision Name3: | Tamworth |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 577 |
| Coordinates: | 43.8247°N -71.3031°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 03883 |
| Area Code: | 603 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 870062 |
South Tamworth is an unincorporated community in the town of Tamworth in Carroll County, New Hampshire, United States. It is located along New Hampshire Route 25, next to the Bearcamp River. Route 25 continues east past the village of Whittier to West Ossipee, where it intersects New Hampshire Route 16. To the west, Route 25 leads to Moultonborough, Center Harbor, and Meredith.
South Tamworth has a separate ZIP code (03883) from the rest of Tamworth.