word | | Country name |
| Bissau | Guinea-Bissau | conventional long form: Republic of Guinea-Bissau conventional short form: Guinea-Bissau local long form: Republica da Guine-Bissau local short form: Guine-Bissau former: Portuguese Guinea |
| biyah | Algeria | conventional long form: People's Democratic Republic of Algeria conventional short form: Algeria local long form: Al Jumhuriyah al Jaza'iriyah ad Dimuqratiyah ash Sha'biyah local short form: Al Jaza'ir |
| blong | Vanuatu | conventional long form: Republic of Vanuatu conventional short form: Vanuatu local long form: Ripablik blong Vanuatu local short form: Vanuatu former: New Hebrides |
| Bolivarian | Venezuela | conventional long form: Bolivarian Republic of Venezuela conventional short form: Venezuela local long form: Republica Bolivariana de Venezuela local short form: Venezuela |
| Bolivariana | Venezuela | conventional long form: Bolivarian Republic of Venezuela conventional short form: Venezuela local long form: Republica Bolivariana de Venezuela local short form: Venezuela |
| Bolivia | Bolivia | conventional long form: Plurinational State of Bolivia conventional short form: Bolivia local long form: Estado Plurinacional de Bolivia local short form: Bolivia |
| Bosna | Bosnia and Herzegovina | ... long form: none conventional short form: Bosnia and Herzegovina local long form: none local short form: Bosna i Hercegovina former: People's Republic of Bosnia and Herzegovina, Socialist Republic of Bosnia and ... |
| Bosnia | Bosnia and Herzegovina | conventional long form: none conventional short form: Bosnia and Herzegovina local long form: none local short form: Bosna i Hercegovina former: People's Republic of Bosnia and Herzegovina, Socialist Republic of Bosnia ... |
| Botswana | Botswana | conventional long form: Republic of Botswana conventional short form: Botswana local long form: Republic of Botswana local short form: Botswana former: Bechuanaland |
| Bouvet | Bouvet Island | conventional long form: none conventional short form: Bouvet Island |