| Type: | highway |
| Road Name: | Southern Ports Highway |
| State: | sa |
| Length: | 118 |
| Route: | B101 |
| Former: | Alt National Route 1 |
| Direction A: | North |
| Direction B: | South |
| Coordinates A: | -36.8258°N 139.8614°W |
| Coordinates B: | -37.5924°N 140.3505°W |
| Pushpin Label Position A: | left |
| Pushpin Label Position B: | left |
| End A: | Princes Highway |
| End B: | Princes Highway |
| Region: | Limestone Coast[1] |
Southern Ports Highway is a 119km (74miles) rural highway in South Australia that connects Kingston SE with Millicent via Rendelsham, Southend, Beachport and Robe. It is a former alignment of Princes Highway, bypassed in 1933.