- Kyōwa
- Kariba
- Kamicharo
- Kamicharo-kisen
- Kaminosawa
- Kamishoro
- Kamishoro-chūō
- Karisho
- Kawahara
- Kawanishi
- Kawashima
- Koikakushi
- Koitoi
- Kyōsei
- Kitayoshihara
- Kojohama
- Kami-furano
- Kanayama
- Kamisarufutsu
- Karibetsu
- Koishi
- Kami-yubetsu
- Kuromatsunai
- Kabutonuma
- Kaigen
- Kamihoronobe
- Kanaura
- Keimei
- Kamiatsunai
- Katsuhira