word | | Nationality |
| adjective | Cambodia | noun: Cambodian(s) adjective: Cambodian |
| adjective | Cameroon | noun: Cameroonian(s) adjective: Cameroonian |
| adjective | Canada | noun: Canadian(s) adjective: Canadian |
| adjective | Cape Verde | noun: Cape Verdean(s) adjective: Cape Verdean |
| adjective | Cayman Islands | noun: Caymanian(s) adjective: Caymanian |
| adjective | Central African Republic | noun: Central African(s) adjective: Central African |
| adjective | Chad | noun: Chadian(s) adjective: Chadian |
| adjective | Chile | noun: Chilean(s) adjective: Chilean |
| adjective | China | noun: Chinese (singular and plural) adjective: Chinese |
| adjective | Christmas Island | noun: Christmas Islander(s) adjective: Christmas Island |
| adjective | Cocos (Keeling) Islands | noun: Cocos Islander(s) adjective: Cocos Islander |
| adjective | Colombia | noun: Colombian(s) adjective: Colombian |
| adjective | Comoros | noun: Comoran(s) adjective: Comoran |
| adjective | Congo, Democratic Republic of the | noun: Congolese (singular and plural) adjective: Congolese or Congo |
| adjective | Congo, Republic of the | noun: Congolese (singular and plural) adjective: Congolese or Congo |
| adjective | Cook Islands | noun: Cook Islander(s) adjective: Cook Islander |
| adjective | Costa Rica | noun: Costa Rican(s) adjective: Costa Rican |