- Carolina1
- Caroline Islands1
- Carrollton (Ala.)1
- Carthage (N.C.)1
- Carver High School, Lake City, Florence County, South Carolina, United States1
- Cassino (Italy)1
- Castle Pinckney (Charleston, S.C.)2
- Castle Pinckney (S.C.)1
- Castleton, Derbyshire, England, United Kingdom1
- Catawba (S.C.)2
- Catawba Street, Columbia, S.C.3
- Catskill, Greene County, New York, United States1
- Cayce (S.C.)155
- Cayuga Lake, New York, United States1
- Cayuga River, New York, United States1
- Cedar Avenue, Fairlawn Barony, Moncks Corner, South Carolina2
- Cedar Creek, Kershaw County, South Carolina, United States1
- Cedar Springs (S.C.)1
- Ceiba (P.R.)1
- Celia Dial Saxon Elementary School, Columbia, Richland County, South Carolina, United States2