26 selected
- Not filled in
- Bahrain
- Bangladesh
- Barbados
- Belarus
- Belgian Congo
- Belgisch Congo
- Belgium
- Belgium - Local
- Belize
- Bermuda
- Bhutan
- Biafra
- Bohemia and Moravia
- Bolivia
- Bosnia and Herzegovina
- Bosnia and Herzegovina - Republika Srpska
- Botswana
- Brazil
- Britain
- British East Africa
- Brits Honduras
- Britse Caraïben
- Brunei
- Bulgaria
- Burma (Myanmar)
- Burundi