South Carolina - Criteria: C (architecture/engineering)
| High Point |
| Hightower Hall |
| Hill Complex Historic District |
| Hillside |
| Hill, W. L., Store |
| Hite, John Jacob, Farm |
| Hobcaw Barony |
| Hodge Hall |
| Holliday, J. W., Jr., House |
| Holman, J. B., House |
| Holy Cross Episcopal Church |
| Home National Bank |
| Hope Rosenwald School |
| Hopewell Presbyterian Church and Hopewell Cemetery |
| Hopewell Rosenwald School |
| Hopkins Family Cemetery |
| Hopkins Graded School |
| Hopkins Presbyterian Church |
| Hopsewee |
| Horn Creek Baptist Church |
| Horry-Guignard House |
| Hotel Albert Commercial Block |
| Hotel Eutaw |
| Hotel Keturah |
| Hotel Oregon |
| House of Peace Synagogue |
| Houser, David, House |
| Howard Junior High School |
| Hudson, Nelson, House |
| Huey, Thomas Walker, House |
| Huger, Cleland Kinloch and Burnet R. Maybank, House |
| Huguenot Church |
| Hunstanton |
| Hunter House |
| Hunting Island State Park Lighthouse |
| Hurricane Tavern |
| Hutchinson House |
| Immanuel School |
| Imperial Hotel |
| Indian Fields Methodist Campground |
| Inman Mills |
| Irby, Dr. William Claudius, House |
| Irby-Henderson-Todd House |
| Isaqueena |
| Ivy, Adam, House |
| Jackson Street Freedman's Cottages |
| James Building |
| James, Louie, House |
| James, William Apollos, House |
| Japonica Hall |
| Jasper County Courthouse |
| Jefferies House |
| Jenkins, Mary, Community Praise House |
| Jennings-Brown House |
| Jeter, Gov. Thomas B., House |
| John's Island Presbyterian Church |
| Johnston Historic District |
| Jones, A. C., House |
| Joye Cottage |
| Kahal Kadosh Beth Elohim Synagogue |
| Kaminer, John J., House |
| Keil Farm |
| Keithfield Plantation |
| Kelley, Jacob, House |
| Kennedy Street School |
| Kensington Plantation House |
| Kershaw Depot |
| Ketchin Building |
| Kilgore, Josiah, House |
| Kinard House |
| Kincaid-Anderson House |
| King Cemetery |
| Kings Mountain National Military Park |
| Kings Mountain State Park Historic District |
| Kingston Presbyterian Church |
| Kingston Presbyterian Church Cemetery |
| Kingstree Historic District |
| Kirkland, B. B., Seed and Distributing Company |
| Koon, John Jacob Calhoun, Farmstead |
| Kress Building |
| Lace House |
| Ladson Presbyterian Church |
| Lake City Downtown Historic District |
| Lancaster Cotton Oil Company |
| Lancaster County Courthouse |
| Lancaster County Jail |
| Lancaster Downtown Historic District |
| Lander College Old Main Building |
| Lando School |
| Landsford Canal |
| Landsford Plantation House |
| Lanneau-Norwood House |
| Latta Downtown Historic District |
| Latta Historic District No. 1 |
| Latta Historic District No. 2 |
| Laurelwood |
| Laurelwood Cemetery |
| Laurens County Courthouse |
| Laurens Historic District |
| Lawson's Pond Plantation |
Data from United States Park Service and Wikidata
