- Charleston Post Card Company1
- Charleston Telephonic Exchange1
- Clarke, Jonathan1
- Cogdell, John S.1
- College of Charleston1
- Colton, G. Woolworth (George Woolworth), 1827-19011
- Colton, J. H. (Joseph Hutchins), 1800-1893 (publisher)1
- Colton, J.H. (Joseph Hutchins), 1800-18931
- Columbia Stage Society (Columbia, S.C.)1
- Conder, Thomas 1746 or 1747-1831 (Sculptor)1
- Conder, Thomas, 1746 or 1747-1831 (engraver)1
- Confederate States of America. Army1
- Confederate States of America. Army. Corps of Engineers1
- Confederate Widows' Home1
- Cook, Joseph B.1
- Costello, Kay1
- Councell, E. C.1
- Councell, E.C.1
- Courtenay, William Ashmead (1831-1908)1
- Cromwell, S.T.1