| South Triangle Pond | |
| Pushpin Map: | Massachusetts |
| Coords: | 41.915°N -70.6625°W |
| Basin Countries: | United States |
| Area: | 15acres |
South Triangle Pond is a 15acres pond in Plymouth, Massachusetts within the Eel River watershed. The pond is located north of South Pond village in the Plymouth Town Forest, east of Great South Pond and south of Plymouth's main Post Office and The Shops at 5.