word | | Country name |
| Central | Malawi | conventional long form: Republic of Malawi conventional short form: Malawi local long form: Dziko la Malawi local short form: Malawi former: British Central African Protectorate, Nyasaland Protectorate, Nyasaland |
| Ceska | Czech Republic | conventional long form: Czech Republic conventional short form: Czech Republic local long form: Ceska Republika local short form: Cesko |
| Cesko | Czech Republic | conventional long form: Czech Republic conventional short form: Czech Republic local long form: Ceska Republika local short form: Cesko |
| Ceylon | Sri Lanka | ... Socialist Republic of Sri Lanka conventional short form: Sri Lanka local long form: Shri Lamka Prajatantrika Samajaya di Janarajaya/Ilankai Jananayaka Choshalichak Kutiyarachu local short form: Shri Lamka/Ilankai former: Serendib, Ceylon |
| Chad | Chad | conventional long form: Republic of Chad conventional short form: Chad local long form: Republique du Tchad/Jumhuriyat Tshad local short form: Tchad/Tshad |
| Chile | Chile | conventional long form: Republic of Chile conventional short form: Chile local long form: Republica de Chile local short form: Chile |
| China | China | conventional long form: People's Republic of China conventional short form: China local long form: Zhonghua Renmin Gongheguo local short form: Zhongguo abbreviation: PRC |
| Chinese | Macau | conventional long form: Macau Special Administrative Region conventional short form: Macau local long form: Aomen Tebie Xingzhengqu (Chinese); Regiao Administrativa Especial de Macau (Portuguese) local short form: Aomen (Chinese); Macau (Portuguese) |
| Choshalichak | Sri Lanka | ... Socialist Republic of Sri Lanka conventional short form: Sri Lanka local long form: Shri Lamka Prajatantrika Samajaya di Janarajaya/Ilankai Jananayaka Choshalichak Kutiyarachu local short form: Shri Lamka/Ilankai former: Serendib, Ceylon |
| Choson | Korea, North | conventional long form: Democratic People's Republic of Korea conventional short form: North Korea local long form: Choson-minjujuui-inmin-konghwaguk local short form: Choson abbreviation: DPRK |
| Christmas | Christmas Island | conventional long form: Territory of Christmas Island conventional short form: Christmas Island |
| Christopher | Saint Kitts and Nevis | conventional long form: Federation of Saint Kitts and Nevis conventional short form: Saint Kitts and Nevis former: Federation of Saint Christopher and Nevis |
| Chu | Vietnam | conventional long form: Socialist Republic of Vietnam conventional short form: Vietnam local long form: Cong Hoa Xa Hoi Chu Nghia Viet Nam local short form: Viet Nam abbreviation: SRV |
| Cisplatine | Uruguay | conventional long form: Oriental Republic of Uruguay conventional short form: Uruguay local long form: Republica Oriental del Uruguay local short form: Uruguay former: Banda Oriental, Cisplatine Province |
| Citta | Holy See (Vatican City) | ... Holy See (State of the Vatican City) conventional short form: Holy See (Vatican City) local long form: Santa Sede (Stato della Citta del Vaticano) local short form: Santa Sede (Citta del Vaticano |
| City | Holy See (Vatican City) | conventional long form: The Holy See (State of the Vatican City) conventional short form: Holy See (Vatican City) local long form: Santa Sede (Stato della Citta del Vaticano) local short form: Santa ... |
| Clipperton | Clipperton Island | conventional long form: none conventional short form: Clipperton Island local long form: none local short form: Ile Clipperton former: sometimes called Ile de la Passion |
| closest | Qatar | ... State of Qatar conventional short form: Qatar local long form: Dawlat Qatar local short form: Qatar note: closest approximation of the native pronunciation falls between cutter and gutter, but not like guitar |
| CNMI | Northern Mariana Islands | conventional long form: Commonwealth of the Northern Mariana Islands conventional short form: Northern Mariana Islands abbreviation: CNMI former: Trust Territory of the Pacific Islands, Mariana Islands District |
| Coast | Cote d'Ivoire | ... of Cote d'Ivoire conventional short form: Cote d'Ivoire local long form: Republique de Cote d'Ivoire local short form: Cote d'Ivoire note: pronounced coat-div-whar former: Ivory Coast |
| Coast | Ghana | conventional long form: Republic of Ghana conventional short form: Ghana former: Gold Coast |