World Factbook
- Bab el Mandeb (strait)
- Babuyan Channel
- Babuyan Islands
- Baffin Bay
- Baffin Island
- Baghdad (capital)
- Baku (capital; also Baki, Baky)
- Balabac Strait
- Balearic Islands
- Balearic Sea (Iberian Sea)
- Bali (island)
- Balintang Channel
- Balintang Islands
- Bali Sea
- Balleny Islands
- Balochistan (region)
- Baltic Sea
- Bamako (capital)
- Banaba (Ocean Island)
- Bandar Seri Begawan (capital)
- Banda Sea
- Bangka (island)
- Bangkok (capital)
- Bangui (capital)
- Banjul (capital)
- Banks Island
- Banks Islands (Iles Banks)
- Barbuda (island)
- Barcelona (city)
- Barents Sea
- Barranquilla (city)
- Bashi Channel
- Basilan Strait
- Basque Provinces
- Bassas da India
- Basseterre (capital)
- Basse-Terre (regional capital)
- Bass Strait
- Bastia (city)
- Basutoland (former name for Lesotho)
- Batan Islands
- Bavaria (region; also Bayern)
- Beagle Channel
- Bear Island (see Bjornoya)
- Beaufort Sea
- Bechuanaland (former name for Botswana)
- Beijing (capital)
- Beirut (capital)
- Bekaa Valley
- Belau (Palau Islands)
- Belep Islands (Iles Belep)
- Belfast (city)
- Belgian Congo (former name for Democratic Republic of the Congo)
- Belgie, Belgique (local name for Belgium)
- Belgrade (capital)
- Belize City
- Belle Isle, Strait of
- Bellingshausen Sea
- Belmopan (capital)
- Belorussia (former name for Belarus)
- Benadir (region; former name of Italian Somaliland)
- Bengal, Bay of
- Berau, Gulf of
- Bering Island
- Bering Sea
- Bering Strait
- Berkner Island
- Berlin, East (former name for eastern sector of Berlin)
- Berlin, West (former name for western sector of Berlin)
- Berlin (capital)
- Bern (capital)
- Bharat (local name for India)
- Bhopal (city)
- Biafra (region)
- Big Diomede Island
- Bijagos, Arquipelago dos (island group)
- Bikini Atoll
- Bilbao (city)
- Bioko (island)
- Biscay, Bay of
- Bishkek (capital)
- Bishop Rock
- Bismarck Archipelago (island group)
- Bismarck Sea
- Bissau (capital)
- Bjornoya (Bear Island)
- Black Forest (region)
- Black Rock (island)
- Black Sea
- Bloemfontein (judicial capital)
- Boa Vista (island)
- Bogota (capital)
- Bo Hai (gulf)
- Bombay (city; see Mumbai)
- Bonaire (island)
- Bonifacio, Strait of
- Bonin Islands
- Bonn (former capital)
- Bophuthatswana (region; enclave)
- Bora-Bora (island)
- Bordeaux (city)
- Bornholm (island)
- Bosna i Hercegovina (local name for Bosnia and Herzegovina)
- Bosnia (political region)
- Bosporus (strait)
- Bothnia, Gulf of
- Bougainville (island)
- Bougainville Strait
- Bounty Islands
- Bourbon Island (former name of Reunion)
- Brasilia (capital)
- Bratislava (capital)
- Brazzaville (capital)
- Bridgetown (capital)
- Brisbane (city)
- Bristol Bay
- Bristol Channel
- Britain (see Great Britain)
- British Bechuanaland (region; former name for northwest South Africa)
- British Central African Protectorate (former name of Nyasaland)
- British Guiana (former name for Guyana)
- British Honduras (former name for Belize)
- British Solomon Islands (former name for Solomon Islands)
- British Somaliland (former name for northern Somalia)
- Brussels (capital)
- Bubiyan (island)
- Bucharest (capital)
- Budapest (capital)
- Buenos Aires (capital)
- Bujumbura (capital)
- Byelarus (local name for Belarus)
- Byelorussia (former name for Belarus)