| Cadiz, OH (Village) |
| Cadiz, KY (City) |
| Cadiz, IN (Town) |
| Cadiz Township, OH (Township) |
| Cadogan, PA (Township) |
| Cadott, WI (Village) |
| Cadwell, GA (Town) |
| Cady, WI (Town) |
| Caernarvon, PA (Township) |
| Caernarvon, PA (Township) |
| Caesar Creek, IN (Township) |
| Caesarscreek Township, OH (Township) |
| Cahokia, IL (Village) |
| Cahokia Township, IL (Township) |
| Cain, IN (Township) |
