| City | Country |
|---|---|
| Katsina | Nigeria |
| Kaech'on | North Korea |
| Kasur | Pakistan |
| Karlsruhe | Germany |
| Kurgan | Russia |
| Kasugai | Japan |
| Kurume | Japan |
| Kocaeli | Turkey |
| Kunp'o | South Korea |
| Kherson | Ukraine |
| Karimnagar | India |
| Kaunas | Lithuania |
| Korhogo | Côte d'Ivoire |
| Kostroma | Russia |
| Katowice | Poland |
| Khmelnytskyi | Ukraine |
| Kunsan | South Korea |
| Kafr ad Dawwar | Egypt |
| Kyongju | South Korea |
| Kakogawacho-honmachi | Japan |
| Kunduz | Afghanistan |
| Kingston upon Hull | United Kingdom |
| Kediri | Indonesia |
| Kuala Terengganu | Malaysia |
| Kutahya | Turkey |
| Kanggye | North Korea |
| Komsomol'sk-na-Amure | Russia |
| Kurmuk | Sudan |
| Kiel | Germany |
| Khimki | Russia |
| Kosice | Slovakia |
| Kamianske | Ukraine |
| Kasukabe | Japan |
| Kropyvnytskyi | Ukraine |
| Krefeld | Germany |
| Kolpino | Russia |
| Karnal | India |
| Korolev | Russia |
| Khomeyni Shahr | Iran |
| Kremenchuk | Ukraine |
| Kure | Japan |
| Kharagpur | India |
| Kodaira | Japan |
| Kalemie | Congo (Kinshasa) |
| Kamirenjaku | Japan |
| Kassel | Germany |
| Kabankalan | Philippines |
| Kasama | Zambia |
| Kouribga | Morocco |
| Khammam | India |