| Keyword | Type | See | See also | Notes |
|---|---|---|---|---|
| Curripoco | Ethnic group | Barauna | ||
| Curses | Keyword | |||
| Cushitic languages | Keyword | |||
| Custody | Keyword | |||
| Custody of children | Keyword | |||
| Customary law | Keyword | |||
| Customs | Keyword | Tradition | ||
| Cut marks | Keyword | |||
| Cuzco | Place | |||
| Cuzco site | Place | |||
| Cyclades | Place | |||
| Cycling | Keyword | |||
| Cyclones | Keyword | |||
| Cylinder seals | Keyword | |||
| Cypro-Geometric period | Keyword | |||
| Cyprus | Country | |||
| Cyrene site | Place | |||
| Cystic fibrosis | Keyword | |||
| Cytogenetics | Keyword | |||
| Czech | Language | |||
| Czech language | Keyword | |||
| Czech Republic | Country | |||
| Czechoslovakia | Place | Czech Republic Slovakia | ||
| Czechs | Ethnic group |