| Country | Country name |
| Ashmore and Cartier Islands | conventional long form: Territory of Ashmore and Cartier Islands conventional short form: Ashmore and Cartier Islands |
| Atlantic Ocean | void |
| Australia | conventional long form: Commonwealth of Australia conventional short form: Australia |
| Austria | conventional long form: Republic of Austria conventional short form: Austria local long form: Republik Oesterreich local short form: Oesterreich |
| Azerbaijan | conventional long form: Republic of Azerbaijan conventional short form: Azerbaijan local long form: Azarbaycan Respublikasi local short form: Azarbaycan former: Azerbaijan Soviet Socialist Republic |
| Bahamas, The | conventional long form: Commonwealth of The Bahamas conventional short form: The Bahamas |
| Bahrain | conventional long form: Kingdom of Bahrain conventional short form: Bahrain local long form: Mamlakat al Bahrayn local short form: Al Bahrayn former: Dilmun |
| Bangladesh | conventional long form: People's Republic of Bangladesh conventional short form: Bangladesh local long form: Gana Prajatantri Banladesh local short form: Banladesh former: East Bengal, East Pakistan |
| Barbados | conventional long form: none conventional short form: Barbados |
| 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 |
| 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 | conventional long form: none conventional short form: Belize former: British Honduras |
| Benin | conventional long form: Republic of Benin conventional short form: Benin local long form: Republique du Benin local short form: Benin former: Dahomey |
| Bermuda | conventional long form: none conventional short form: Bermuda former: Somers Islands |
| Bhutan | conventional long form: Kingdom of Bhutan conventional short form: Bhutan local long form: Druk Gyalkhap local short form: Druk Yul |