| Baden |
| Baden-Württemberg |
| Bahamas |
| Bahia |
| Bahrain |
| Baltic State |
| Bangladesh |
| Barbados |
| Baroda |
| Basel-Land |
| Basel-Stadt |
| Basque Country |
| Batavian Republic |
| Bavaria |
| Belarus |
| Belgium |
| Belize |
| Benin |
| Berlin (since 1990) |
| Berlin, West |
| Berlin, East |
| Bermuda |
| Bern |
| Bhavnagar |
| Bhopal |
| Biafra |
| Bolivia |
| Borneo, North |
| Bosnia & Herzegovina |
| Botswana |
| Brandenburg |
| Brazil |
| Bremen |
| British Burma |
| British Columbia |
| British East Africa |
| British East India Co. |
| British Honduras |
| British North Borneo |
| British Virgin Islands |
| Brunei Darussalam |
| Buenos Aires |
| Bulgaria |
| Burkina Faso |
| Burma (till 1886) |
| Burma (since 1937) |
| Burundi |