Seychelles
Amman [US Embassy] Jordan
Amsterdam [US Consulate General] Netherlands
Amsterdam Island French Southern and Antarctic Lands
(Ile Amsterdam)
Amundsen Sea Pacific Ocean
Amur China; Soviet Union
Andaman Islands India
Andaman Sea Indian Ocean
Anegada Passage Atlantic Ocean
Anglo-Egyptian Sudan Sudan
Anjouan Comoros
Ankara [US Embassy] Turkey
Annobon Equatorial Guinea
Antananarivo [US Embassy] Madagascar
Antipodes Islands New Zealand
Antwerp [US Consulate General] Belgium
Aozou Strip [claimed by Libya] Chad
Aqaba, Gulf of Indian Ocean
Arabian Sea Indian Ocean
Arafura Sea Pacific Ocean
Argun China; Soviet Union
Ascension Island Saint Helena
Assumption Island Seychelles
Asuncion [US Embassy] Paraguay
Asuncion Island Northern Mariana Islands
Atacama Chile
Athens [US Embassy] Greece
Attu United States
Auckland [US Consulate General] New Zealand
Auckland Islands New Zealand
Australes Iles (Iles Tubuai) French Polynesia
Axel Heiberg Island Canada
Azores Portugal
Azov, Sea of Atlantic Ocean

Bab el Mandeb Indian Ocean
Babuyan Channel Pacific Ocean
Babuyan Islands Philippines
Baffin Bay Arctic Ocean
Baffin Island Canada
Baghdad [US Embassy] Iraq
Balabac Strait Pacific Ocean
Balearic Islands Spain
Balearic Sea (Iberian Sea) Atlantic Ocean
Bali [US Consular Agency] Indonesia
Bali Sea Indian Ocean
Balintang Channel Pacific Ocean
Balintang Islands Philippines
Balleny Islands Antarctica
Balochistan Pakistan
Baltic Sea Atlantic Ocean
Bamako [US Embassy] Mali
Banaba (Ocean Island) Kiribati
Bandar Seri Begawan [US Embassy] Brunei
Banda Sea