word | | Country name |
| form | British Indian Ocean Territory | conventional long form: British Indian Ocean Territory conventional short form: none abbreviation: BIOT |
| form | British Virgin Islands | conventional long form: none conventional short form: British Virgin Islands abbreviation: BVI |
| form | Brunei | conventional long form: Brunei Darussalam conventional short form: Brunei local long form: Negara Brunei Darussalam local short form: Brunei |
| form | Bulgaria | conventional long form: Republic of Bulgaria conventional short form: Bulgaria local long form: Republika Balgariya local short form: Balgariya |
| form | 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 |
| form | 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 ... |
| form | 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 |
| form | Cambodia | conventional long form: Kingdom of Cambodia conventional short form: Cambodia local long form: Preahreacheanachakr Kampuchea (phonetic pronunciation) local short form: Kampuchea former: Khmer Republic, Democratic Kampuchea, People's Republic of Kampuchea, State ... |
| form | Cameroon | conventional long form: Republic of Cameroon conventional short form: Cameroon local long form: Republique du Cameroun/Republic of Cameroon local short form: Cameroun/Cameroon former: French Cameroon, British Cameroon, Federal Republic of ... |
| form | Canada | conventional long form: none conventional short form: Canada |