| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
| Chaivo | city | Sakhalinskaya Oblast' | Russia | 52.3666667 | 143.1833333 | 6 | 48 |
| Chamgu | city | Sakhalinskaya Oblast' | Russia | 50.9444444 | 143.6097222 | 91 | 90 |
| Changi | city | Sakhalinskaya Oblast' | Russia | 52.8833333 | 141.8666667 | 6 | 41 |
| Chapayevo | city | Sakhalinskaya Oblast' | Russia | 46.7805556 | 142.9613889 | 82 | 476 |
| Chaplakova | city | Sakhalinskaya Oblast' | Russia | 46.9672222 | 142.2286111 | 429 | 761 |
| Chaplakovo | city | Sakhalinskaya Oblast' | Russia | 46.9672222 | 142.2286111 | 429 | 761 |
| Chaplanovo | city | Sakhalinskaya Oblast' | Russia | 46.9672222 | 142.2286111 | 429 | 761 |
| Chaplyakovo | city | Sakhalinskaya Oblast' | Russia | 46.9672222 | 142.2286111 | 429 | 761 |
| Chaykino | city | Sakhalinskaya Oblast' | Russia | 46.55 | 141.8166667 | 137 | 282 |
| Chayvo | city | Sakhalinskaya Oblast' | Russia | 52.3666667 | 143.1833333 | 6 | 48 |
| Chekhov | city | Sakhalinskaya Oblast' | Russia | 47.4427778 | 141.9788889 | 29 | 389 |
| Chekhovskoye | city | Sakhalinskaya Oblast' | Russia | 50.9588889 | 142.2516667 | 429 | 120 |
| Cheplakovo | city | Sakhalinskaya Oblast' | Russia | 46.9672222 | 142.2286111 | 429 | 761 |
| Cheremshanka | city | Sakhalinskaya Oblast' | Russia | 47.9044444 | 142.2077778 | 62 | 355 |
| Cherinovskiy | city | Sakhalinskaya Oblast' | Russia | 49.1166667 | 142.15 | 59 | 537 |
| Chernaya Rechka | city | Sakhalinskaya Oblast' | Russia | 50.7 | 142.0833333 | 456 | 52 |
| Chernovskiy | city | Sakhalinskaya Oblast' | Russia | 49.4 | 142.1 | 150 | 329 |
| Chichine | city | Sakhalinskaya Oblast' | Russia | 46.3 | 143.55 | 3 | 220 |
| Chikahoro | city | Sakhalinskaya Oblast' | Russia | 48.0333333 | 142.5166667 | 154 | 656 |
| Chikaporo | city | Sakhalinskaya Oblast' | Russia | 48.0333333 | 142.5166667 | 154 | 656 |
| Chikhnoy | city | Sakhalinskaya Oblast' | Russia | 52.8833333 | 141.8666667 | 6 | 41 |
| Chilik | city | Sakhalinskaya Oblast' | Russia | 51.3833333 | 84.3 | 3244 | 379 |
| Chinehira | city | Sakhalinskaya Oblast' | Russia | 46.8333333 | 141.9333333 | 298 | 405 |
| Chingay | city | Sakhalinskaya Oblast' | Russia | 52.8833333 | 141.8666667 | 6 | 41 |
| Chinnai | city | Sakhalinskaya Oblast' | Russia | 48.4 | 142.1 | 13 | 243 |
| Chinnaitanzan | city | Sakhalinskaya Oblast' | Russia | 48.4 | 142.25 | 269 | 425 |
| Chinnay | city | Sakhalinskaya Oblast' | Russia | 48.4 | 142.1 | 13 | 243 |
| Chio | city | Sakhalinskaya Oblast' | Russia | 49.2666667 | 142.0833333 | 374 | 202 |
| Chipiikarushi | city | Sakhalinskaya Oblast' | Russia | 49.3 | 143.7166667 | 0 | 110 |
| Chir-vo | city | Sakhalinskaya Oblast' | Russia | 51.1666667 | 142.6833333 | 226 | 336 |
| Chirai | city | Sakhalinskaya Oblast' | Russia | 47.85 | 142.0833333 | 0 | 81 |
| Chiraifunaipo | city | Sakhalinskaya Oblast' | Russia | 47.85 | 142.0833333 | 0 | 81 |
| Chirikoro | city | Sakhalinskaya Oblast' | Russia | 49.6666667 | 144.1 | 390 | 171 |
| Chirin | city | Sakhalinskaya Oblast' | Russia | 49.6166667 | 142.85 | 324 | 229 |
| Chiringai | city | Sakhalinskaya Oblast' | Russia | 49.6166667 | 142.85 | 324 | 229 |
| Chirivo | city | Sakhalinskaya Oblast' | Russia | 51.1666667 | 142.6833333 | 226 | 336 |
| Chishiya | city | Sakhalinskaya Oblast' | Russia | 46.0202778 | 142.17 | 0 | 470 |
| Chistovodnoye | city | Sakhalinskaya Oblast' | Russia | 47.0333333 | 142.3333333 | 931 | 761 |
| Chitose | city | Sakhalinskaya Oblast' | Russia | 46.6963889 | 142.7416667 | 75 | 229 |
| Chiwagai | city | Sakhalinskaya Oblast' | Russia | 49.6166667 | 142.85 | 324 | 229 |
| Chkalovo | city | Sakhalinskaya Oblast' | Russia | 46.3666667 | 141.8666667 | 0 | 221 |
| Chërnaya Rechka | city | Sakhalinskaya Oblast' | Russia | 50.7 | 142.0833333 | 456 | 52 |
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