word | | Country name |
| British | Solomon Islands | conventional long form: none conventional short form: Solomon Islands local long form: none local short form: Solomon Islands former: British Solomon Islands |
| Brunei | Brunei | conventional long form: Brunei Darussalam conventional short form: Brunei local long form: Negara Brunei Darussalam local short form: Brunei |
| Bulgaria | Bulgaria | conventional long form: Republic of Bulgaria conventional short form: Bulgaria local long form: Republika Balgariya local short form: Balgariya |
| Bundesrepublik | Germany | conventional long form: Federal Republic of Germany conventional short form: Germany local long form: Bundesrepublik Deutschland local short form: Deutschland former: German Empire, German Republic, German Reich |
| Burkina | Burkina Faso | conventional long form: none conventional short form: Burkina Faso local long form: none local short form: Burkina Faso former: Upper Volta, Republic of Upper Volta |
| Burma | Burma | conventional long form: Union of Burma conventional short form: Burma local long form: Pyidaungzu Myanma Naingngandaw (translated by the US Government as Union of Myanma and by the Burmese as Union of ... |
| Burmese | Burma | ... form: Pyidaungzu Myanma Naingngandaw (translated by the US Government as Union of Myanma and by the Burmese as Union of Myanmar) local short form: Myanma Naingngandaw former: Socialist Republic of the Union ... |
| Burundi | Burundi | conventional long form: Republic of Burundi conventional short form: Burundi local long form: Republique du Burundi/Republika y'u Burundi local short form: Burundi former: Urundi |
| BVI | British Virgin Islands | conventional long form: none conventional short form: British Virgin Islands abbreviation: BVI |
| Byelarus | Belarus | conventional long form: Republic of Belarus conventional short form: Belarus local long form: Respublika Byelarus' local short form: Byelarus' former: Belorussian (Byelorussian) Soviet Socialist Republic |
| Byelorussian | Belarus | conventional long form: Republic of Belarus conventional short form: Belarus local long form: Respublika Byelarus' local short form: Byelarus' former: Belorussian (Byelorussian) Soviet Socialist Republic |