- Privately held66
- Proctor & Gamble1
- Proctor & Gamble Bakery Service1
- Producers Creamery Company1
- Quaker Oats1
- Quality Press, Milwaukee1
- R. B. Davis Company2
- R. T. French Company1
- R. U. Delapenha & Co., Inc.1
- Rath's Black Hawk1
- Rawleigh1
- Remington Arms Company1
- Republic Metalware Company1
- Reynolds Metals Company1
- Richard Hellmann, Inc.1
- Richland County Public Library1
- Richland Library, Columbia, S.C.18,357
- Richland Library, Columbia, S.C.
15
- Richland Library, Columbia, S.C. 4
- Richland Library, Columbia, S.C.; Richland Library, Columbia, S.C.3