Byelorussia
Belarus

C
Cabinda
Angola

Cabot Strait
Atlantic Ocean

Caicos Islands
Turks and Caicos Islands

Cairo [US Embassy]
Egypt

Calcutta [US Consulate General]
India

Calgary [US Consulate General]
Canada

California, Gulf of
Pacific Ocean

Campbell Island
New Zealand

Canal Zone
Panama

Canary Islands
Spain

Canberra [US Embassy]
Australia

Cancun [US Consular Agency]
Mexico

Canton (Guangzhou)
China

Canton Island
Kiribati

Cape Town [US Consulate General]
South Africa

Caracas [US Embassy]
Venezuela

Cargados Carajos Shoals
Mauritius

Caroline Islands
Micronesia, Federated States of; Pacific Islands, Trust Territory of the

Caribbean Sea
Atlantic Ocean

Carpentaria, Gulf of
Pacific Ocean

Casablanca [US Consulate General]
Morocco

Castries
Saint Lucia

Cato Island
Australia

Cayenne
French Guiana

Cebu [US Consulate General]
Philippines

Celebes
Indonesia

Celebes Sea
Pacific Ocean

Celtic Sea
Atlantic Ocean

Central African Empire
Central African Republic

Ceuta
Spain

Ceylon
Sri Lanka

Chafarinas, Islas
Spain

Chagos Archipelago (Oil Islands)
British Indian Ocean Territory

Channel Islands
Guernsey; Jersey

Charlotte Amalie
Virgin Islands

Chatham Islands
New Zealand

Cheju-do
Korea, South

Cheju Strait
Pacific Ocean

Chengdu [US Consulate General]
China

Chesterfield Islands (Iles Chesterfield)
New Caledonia

Chiang Mai [US Consulate General]
Thailand

Chihli, Gulf of (Bo Hai)
Pacific Ocean

China, People's Republic of
China

China, Republic of
Taiwan

Chisinau [US Embassy]
Moldova

Choiseul
Solomon Islands

Christchurch [US Consular Agency]
New Zealand

Christmas Island [Indian Ocean]
Australia

Christmas Island [Pacific Ocean] (Kiritimati)
Kiribati

Chukchi Sea
Arctic Ocean

Ciskei
South Africa

Ciudad Juarez [US Consulate General]
Mexico

Cochabamba [US Consular Agency]
Bolivia

Coco, Isla del
Costa Rica

Cocos Islands
Cocos (Keeling) Islands

Colombo [US Embassy]
Sri Lanka

Colon [US Consular Agency]
Panama

Colon, Archipielago de (Galapagos Islands)
Ecuador

Commander Islands (Komandorskiye Ostrova)
Russia

Conakry [US Embassy]
Guinea

Congo (Brazzaville)
Congo

Congo (Kinshasa)
Zaire

Congo (Leopoldville)
Zaire

Con Son Islands
Vietnam

Cook Strait
Pacific Ocean

Copenhagen [US Embassy]
Denmark

Coral Sea
Pacific Ocean

Corn Islands (