word | | Nationality |
| adjective | Barbados | noun: Barbadian(s) or Bajan (colloquial) adjective: Barbadian or Bajan (colloquial) |
| adjective | Belarus | noun: Belarusian(s) adjective: Belarusian |
| adjective | Belgium | noun: Belgian(s) adjective: Belgian |
| adjective | Belize | noun: Belizean(s) adjective: Belizean |
| adjective | Benin | noun: Beninese (singular and plural) adjective: Beninese |
| adjective | Bermuda | noun: Bermudian(s) adjective: Bermudian |
| adjective | Bhutan | noun: Bhutanese (singular and plural) adjective: Bhutanese |
| adjective | Bolivia | noun: Bolivian(s) adjective: Bolivian |
| adjective | Bosnia and Herzegovina | noun: Bosnian(s), Herzegovinian(s) adjective: Bosnian, Herzegovinian |
| adjective | Botswana | noun: Motswana (singular), Batswana (plural) adjective: Motswana (singular), Batswana (plural) |
| adjective | Brazil | noun: Brazilian(s) adjective: Brazilian |
| adjective | British Virgin Islands | noun: British Virgin Islander(s) adjective: British Virgin Islander |
| adjective | Brunei | noun: Bruneian(s) adjective: Bruneian |
| adjective | Bulgaria | noun: Bulgarian(s) adjective: Bulgarian |
| adjective | Burkina Faso | noun: Burkinabe (singular and plural) adjective: Burkinabe |
| adjective | Burma | noun: Burmese (singular and plural) adjective: Burmese |
| adjective | Burundi | noun: Burundian(s) adjective: Burundian |