K
- (Tōkamachi-shi) Kuwagarazawa
- (Tōkamachi-shi) Kuramata
- (Minamiuonuma Shi) Kabanosawa-shinden
- (Minamiuonuma Shi) Kirisawa
- (Minamiuonuma Shi) Kyōoka
- (Minamiuonuma Shi) Kamiizuna
- (Sanjō Shi) Komagomi
- (Sanjō Shi) Kitagata
- (Sanjō Shi) Kamihonai
- (Tsubame Shi) Koike
- (Tsubame Shi) Kamigawara
- (Niigata Shi) Kaigara
- (Niigata Shi) Kosugi
- (Niigata Shi) Kyūzōgoya
- (Niigata Shi) Koguchi
- (Gosen Shi) Kozuradani
- (Gosen Shi) Kamitogura
- (Gosen Shi) Kamiōkanbara
- (Higashikambara-gun) Kawaguchi
- (Higashikambara-gun) Kamishima
- (Higashikambara-gun) Kuroiwa
- (Higashikambara-gun) Kushima
- (Agano Shi) Kamiiizuka
- (Shibata Shi) Kanazu
- (Shibata Shi) Kumaide
- (Higashikambara-gun) Koara
- (Higashikambara-gun) Kuranohira
- (Myoko-shi) Kamibaba
- (Myoko-shi) Kamitsuboyama
- (Nakaōnuma-gun) Kettō