Bolivia
conventional long form: Republic of Bolivia
conventional short form: Bolivia
local long form: Republica de Bolivia
local short form: Bolivia

Bosnia and Herzegovina
conventional long form: none
conventional short form: Bosnia and Herzegovina
local long form: none
local short form: Bosna i Hercegovina

Botswana
conventional long form: Republic of Botswana
conventional short form: Botswana
former: Bechuanaland

Bouvet Island
conventional long form: none
conventional short form: Bouvet Island

Brazil
conventional long form: Federative Republic of Brazil
conventional short form: Brazil
local long form: Republica Federativa do Brasil
local short form: Brasil

British Indian Ocean Territory
conventional long form: British
Indian Ocean Territory
conventional short form: none
abbreviation: BIOT

British Virgin Islands
conventional long form: none
conventional short form: British Virgin Islands
abbreviation: BVI

Brunei
conventional long form: Negara Brunei Darussalam
conventional short form: Brunei

Bulgaria
conventional long form: Republic of Bulgaria
conventional short form: Bulgaria

Burkina Faso
conventional long form: none
conventional short form: Burkina Faso
former: Upper Volta, Republic of Upper Volta