| Code | Name | Region |
|---|---|---|
| RUKMA | Kostomuksha | |
| RUKMW | Kostroma | |
| RUXC2 | Kotel'niki | MOS |
| RUKTN | Kotel'nikovo | VGG |
| RUKOT | Kotel'nyy | SA |
| RUKSZ | Kotlas | |
| RUKOV | Kovrov | |
| RUKOZ | Kozelsk | |
| RUKZH | Kozhevnikovo | TOM |
| RUKZM | Kozmino Port | |
| RUKYG | Krasnaya Glinka | SAM |
| RUKRP | Krasnaya Polyana | KIR |
| RUKMK | Krasnoarmeysk | MOS |
| RUKRR | Krasnodar | |
| RUKRS | Krasnogorsk | |
| RUKJA | Krasnojarsk | |
| RUKNK | Krasnokamsk | PER |
| RUKRN | Krasnoobsk | NVS |
| RURYK | Krasnoturansk | KYA |
| RUKOH | Kokhma | IVA |
| RUKCG | Kol'chugino | |
| RUKYI | Kolguyev Island | NEN |
| RUKOL | Kolodeznyy | VOR |
| RUKLM | Kolomna | KRS |
| RUKVO | Kolpashevo | TOM |
| RUKLP | Kolpino | SPE |
| RUKLT | Koltogorskiye | TOM |
| RUKMR | Kommunar | LEN |
| RUKXK | Komsomolsk Na Amure | |
| RUKOK | Konakovo | |
| RUKON | Konakovo | TVE |
| RUKPA | Kondopoga | |
| RUKNL | Konets Lug | IRK |
| RUKR9 | Korenovsk | KDA |
| RUKRF | Korf | |
| RUKRK | Korkino | CHE |
| RUKAD | Korolev (ex Kaliningrad), Moskovskaya | MOS |
| RUKOR | Korsakov | |
| RUKOY | Koryazhma | ARK |
| RUKIK | Kirensk | IRK |
| RUKYK | Kireyevskoye | TOM |
| RUKLV | Kirillovka | |
| RUKIR | Kirishi | |
| RUKVX | Kirov | |
| RUKCP | Kirovo-chepetsk | KIR |
| RUKVK | Kirovsk | |
| RUKVS | Kirovsk | MUR |
| RUKIY | Kirovskiy | |
| RUKPY | Kirovskiy | KAM |
| RUKRZ | Kirzhach | VLA |