K
- (Gotō Shi) Kebuta Se
- (Kitamatsuura-gun) Kebuta Se
- (Hirado Shi) Kai Se
- (Iki Shi) Katsumotochō-yunomotoura
- (Tsushima-shi) Kamitsushimachō-waniura
- (Sasebo Shi) Kosazachō-usunoura
- (Tsushima-shi) Kamitsushimachō-ajiro
- (Sasebo Shi) Kosazachō-takenokoba
- (Tsushima-shi) Kamitsushimachō-tōjūshi
- (Tsushima-shi) Kamiagatachō-shishimi
- (Tsushima-shi) Kamiagatachō-sago
- (Tsushima-shi) Kamitsushimachō-ashimi
- (Tsushima-shi) Kamiagatachō-nishitsuya
- (Tsushima-shi) Kamitsushimachō-nishidomari
- (Tsushima-shi) Kuta
- (Sasebo Shi) Kosazachō-kusudomari
- (Matsuura Shi) Kuroshio
- (Sasebo Shi) Kuro Shima
- (Saikai-shi) Kurose
- (Minamishimabara-shi) Kuchinotsu
- (Sasebo Shi) Kuchiki
- (Nagasaki-shi) Kubo
- (Minamishimabara-shi) Kubo
- (Nagasaki-shi) Kosugemachi
- (Minamimatsuura Gun) Kōnoura
- (Nagasaki-shi) Kōnoura
- (Nagasaki-shi) Kokubuchō
- (Unzen-shi) Kōjiro
- (Sasebo Shi) Kojimachō
- (Sasebo Shi) Koionoura