K
- (Isahaya-shi) Kogakurachō
- (Sasebo Shi) Kodai
- (Gotō Shi) Kishikumachi-kishiku
- (Isahaya-shi) Kishū
- (Shimabara-shi) Kisaki
- (Tsushima-shi) Kamitsushimachō-hitoe
- (Isahaya-shi) Keya
- (Nagasaki-shi) Keinokubimachi
- (Higashisonigi-gun) Kawatana
- (Sasebo Shi) Kawanotani
- (Iki Shi) Katsumotochō-katsumotoura
- (Nagasaki-shi) Katagami
- (Kitamatsuura-gun) Karamizaki
- (Gotō Shi) Kamisakiyamachō
- (Nagasaki-shi) Kamino-shima
- (Nagasaki-shi) Kami-kurosaki
- (Nagasaki-shi) Kamigō
- (Saikai-shi) Kamanoura
- (Sasebo Shi) Kakinoura
- (Saikai-shi) Kakinoura
- (Gotō Shi) Kaba Shima
- (Nagasaki-shi) Kaba Shima
- (Tsushima-shi) Kamitsushimachō-izumi
- (Tsushima-shi) Kasmiagatachō-inugaura
- (Tsushima-shi) Kamiagatachō-miso
- (Tsushima-shi) Kamitsushimachō-ōmasu
- (Tsushima-shi) Kamitsushimachō-goneo
- (Gotō Shi) Kishikumachi-kawara
- (Gotō Shi) Kishikumachi-kōmu
- (Minamimatsuura Gun) Kamigotō