Lockhart is a town in Union County, South Carolina, United States.

The McCollum Fish Weir was listed on the National Register of Historic Places in 1974.

John D. Long Lake is 3 miles (4.8 km) west of the town center.

31.6% of all households were made up of individuals, and 5.3% had someone living alone who was 65 years of age or older.

Now local students attend Union County High School.