37 selected
- Nagorno-Karabakh
- Namibia
- Natal
- Nauru
- Nepal
- Netherlands
- Netherlands Antilles
- Netherlands East Indies - Occupation by Japan
- Netherlands New Guinea
- Nevis
- New Brunswick
- New Caledonia
- New Guinea
- New Hebrides
- New South Wales
- New Zealand
- Newfoundland
- Niassa
- Nicaragua
- Niger
- Niger Coast
- Nigeria
- Niuafo'ou
- Niue
- Norfolk
- North Borneo
- North German Postal Area
- North Ingria
- North Korea
- North Macedonia
- North Rhodesia
- Northern Cyprus - Turkish Republic
- Northern Nigeria
- Norway
- Norway - Jul stamps
- Nosy Be
- Nova Scotia
- Not filled in