| -C- | -D- | |
| Cambodia | China - Taiwan | Dahomey |
| Canada | Cilicia | Danzig |
| Canada - Newfoundland | Cocos (Keeling) Islands | Denmark |
| Cape Verde | Colombia | Dominica |
| Caribbean Netherlands | Comoro Islands | Dominican Republic |
| Cayes of Belize | Congo People's Republic | Dubai |
| Cayman Islands | Costa Rica | -E- |
| Central African Republic | Croatia | Ecuador |
| Ceylon | Cuba | Egypt |
| Chile | Cyprus | Equatorial Guinea |
| China | Eritrea | |
| China - East | Estonia | |
| China - People's Republic | Ethiopia | |
| China - Port Arthur |
Promoting collecting lighthouses on stamps and related items
