South Carolina Highway 430 (SC 430) is a state highway in the west central part of the U.S. state of South Carolina. The highway runs 11.7 miles (18.8 km) in a south-north orientation from just northeast of Edgefield northwest and then due north to a point on the edge of Sumter National Forest, all in Edgefield County.

SC 430 begins at an intersection with SC 23 just northeast of Edgefield. The route heads northwest, cutting across the northeast part of the city. It then intersects US 25 in the northern part of the city. SC 430 then heads due north until it meets its northern terminus, at an intersection with US 378 on the southeastern edge of Sumter National Forest, in a rural part of the county.

The entire route is in Edgefield County.