word | | Country name |
| Base | Dhekelia | conventional long form: Dhekelia Sovereign Base Area conventional short form: Dhekelia |
| Basutoland | Lesotho | conventional long form: Kingdom of Lesotho conventional short form: Lesotho local long form: Kingdom of Lesotho local short form: Lesotho former: Basutoland |
| Bechuanaland | Botswana | conventional long form: Republic of Botswana conventional short form: Botswana local long form: Republic of Botswana local short form: Botswana former: Bechuanaland |
| Belarus | 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 |
| Belau | Palau | conventional long form: Republic of Palau conventional short form: Palau local long form: Beluu er a Belau local short form: Belau former: Trust Territory of the Pacific Islands, Palau District |
| Belgian | Congo, Democratic Republic of the | ... Republic of the Congo conventional short form: DRC local long form: Republique Democratique du Congo local short form: RDC former: Congo Free State, Belgian Congo, Congo/Leopoldville, Congo/Kinshasa, Zaire abbreviation: DRC |
| Belgie | Belgium | conventional long form: Kingdom of Belgium conventional short form: Belgium local long form: Royaume de Belgique/Koninkrijk Belgie local short form: Belgique/Belgie |
| Belgique | Belgium | conventional long form: Kingdom of Belgium conventional short form: Belgium local long form: Royaume de Belgique/Koninkrijk Belgie local short form: Belgique/Belgie |
| Belgium | Belgium | conventional long form: Kingdom of Belgium conventional short form: Belgium local long form: Royaume de Belgique/Koninkrijk Belgie local short form: Belgique/Belgie |
| Belize | Belize | conventional long form: none conventional short form: Belize former: British Honduras |
| Belorussian | 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 |