South Carolina Highway 34 (SC 34) is a 185.930-mile (299.225 km) primary state highway in the U.S. state of South Carolina. As one of the longer state highways, it traverses the state east–west from Greenwood to Dillon, connecting the cities of Newberry, Winnsboro, Camden, Bishopville and Darlington.

Dillon is a city in Dillon County in eastern South Carolina, United States. It is the county seat and largest city of Dillon County. It was established on December 22, 1888. Both the name of the city and county comes from James W. Dillon, an early settler and key figure in bringing a railroad through the area. The population was 6,788 in the 2010 U.S. census.