- Railroad tunnels1
- Ravenel, Arthur1
- Reading1
- Red Cross and Red Crescent1
- Reenactment history1
- Republican Party (S.C.)1
- Republican Party (U.S. : 1854- )1
- Ribault, Jean, approximately 1520-15651
- Riverbanks Zoo and Garden (Columbia, S.C.)1
- Roads1
- Roller skating1
- Roller-skating rinks1
- Roosevelt, Eleanor, 1884-19621
- Roosevelt, Franklin D. (Franklin Delano), 1882-19451
- Roper, Daniel C. (Daniel Calhoun), 1867-19431
- Ruckstull, F.W. (Fred Wellington), 1853-19421
- Rural electrification1
- Rural schools1
- Rutledge, John, 1739-18001
- Salley, Alexander S. (Alexander Samuel), 1871-19611