Cheju-do — Korea, South
Cheju Strait — Pacific Ocean
Chengdu [US Consulate General] — China
Chesterfield Islands — New Caledonia (Iles Chesterfield)
Chiang Mai [US Consulate General] — Thailand
Chihli, Gulf of (see Bo Hai) — Pacific Ocean
China, People's Republic of — China
China, Republic of — Taiwan
Chisinau [US Embassy] — Moldova
Choiseul — Solomon Islands