| State: | SC |
| Type: | SC |
| Route: | 557 |
| Map: | SC 557 map.svg |
| Length Mi: | 6.710 |
| Length Ref: | [1] |
| Established: | 1942 |
| Direction A: | South |
| Terminus A: | near Clover |
| Direction B: | North |
| Terminus B: | in Lake Wylie |
| Counties: | York |
| Previous Type: | SC |
| Previous Route: | 555 |
| Next Type: | SC |
| Next Route: | 560 |
South Carolina Highway 557 (SC 557) is a 6.71miles primary state highway in the U.S. state of South Carolina. It serves as a connector route between Clover and Lake Wylie.
SC 557 is a two-lane rural highway that traverses 6.7miles from SC 55 near Clover to SC 49/SC 274 in Lake Wylie. The highway provides travelers a more direct route to and from Charlotte. Though it runs physically west-to-east, it is signed as a north-south highway with its western end as its southern terminus and vice versa.
The highway was established in 1942 as a renumbering of SC 59. The route has changed little since.