Mai hivatalos név
| Ország | Névváltozatok
|
| Calau | NM | Kalawa [so.] |
| Calcide ld. Chalkida | | |
| Caldaro ld. Caldaro / Kaltern | | |
| Caldaro / Kaltern | OL, T | †Caldaro [1918-1969]; Kaltern [AU -1918, NM 1943-45] |
| Calino ld. Kalimnos | | |
| Čalovo ld. Veľký Meder | | |
| Călugăreni | RO | |
| Camenca | MOL | "Kamenka / Кaмeнкa [OR -1918]; Kamjanka / Кaм'янкa [UKR 1918-1941]; Camenca [RO 1941-1944]; Kamenka / Кaмeнкa [MOL 1944-91]" |
| Cameniţa ld. Kamjanec'-Podil's'kyj | | |
| Camimahalle ld. Temenos | | |
| Čam-Korija ld. Borovec | | |
| Cammin in Pommern ld. Kamień Pomorski | | |
| Câmpeni ld. Cîmpeni | | |
| Câmpia Turzii ld. Cîmpia Turzii | | |
| Câmpina ld. Cîmpina | | |
| Campoformio | OL, F | Campoformio [AU 1797-1866, NM 1944-1945] |
| Campo Tures ld. Campo Tures / Sand in Taufers | | |
| Campo Tures / Sand in Taufers | OL, T | †Campo Tures [1918-69]; Sand in Taufers [AU -1918, NM 1943-45] |
| Câmpulung (Moldovenesc) ld. Cîmpulung | | |
| Čaňa | SLK | Hernádcsány [MA -1918, 1938-1944] |
| Čanad ld. Magyarcsanád | | |
| Çanakkale | TR | Dardanellia / Dardanellia [gr.] |
| Canale ld. Kanal | | |
| Canale d'Isonzo ld. Kanal | | |
| Canara ld. Ovidiu | | |
| Candia ld. Iraklio | | |
| Canea ld. Chania | | |
| Canfanaro ld. Kanfanar | | |
| Čantavir / Чaнтaвиp | JU, SB, V | Csantavér [MA -1918, 1941-1944] |
| Cantemir | MOL | Prut / Пpут [OR 1812-1856, 1859-1918]; Cantemir [RO 1918-1940, 1941-1944]; Prut / Пpут [MOL 1944-?]; Kantemir / Кaнтeмиp [MOL -1991] |
