Azerbaijan
noun: Azerbaijani(s)
adjective: Azerbaijani
Bahamas, The
noun: Bahamian(s)
adjective: Bahamian
Bahrain
noun: Bahraini(s)
adjective: Bahraini
Bangladesh
noun: Bangladeshi(s)
adjective: Bangladeshi
Barbados
noun: Barbadian(s) or Bajan (colloquial)
adjective: Barbadian or Bajan (colloquial)
Belarus
noun: Belarusian(s)
adjective: Belarusian
Belgium
noun: Belgian(s)
adjective: Belgian
Belize
noun: Belizean(s)
adjective: Belizean
Benin
noun: Beninese (singular and plural)
adjective: Beninese
Bermuda
noun: Bermudian(s)
adjective: Bermudian