| Railway | Line | Linetype |
| JR Kyūshū | Nagasaki Hon | JR railway |
| Nagasaki Hon (Old line) | JR railway |
| Opened | 1891 | Tosu - Saga | Tracks | Double track | Tosu - Hizen-Yamaguchi |
| 1895 | Saga - Hizen-Yamaguchi | Single track | Hizen-Yamaguchi - Isahaya | ||
| 1930 - 1934 | Hizen-Yamaguchi - Isahaya | Double track | Isahaya - Kikitsu | ||
| 1898 | Isahaya - Kikitsu - (old line) - Urakami | Single track | Kikitsu - Urakami | ||
| 1905 | Urakami - Nagasaki | Double track | Urakami - Nagasaki | ||
| 1972 | Kikitsu - (new line) - Urakami |
| Mapion | Major stations | Connecting lines | Km | City | Prefecture | |
| Map | Map | Tosu | JR Kyūshū: Kagoshima Hon (Mojikō - Yatsushiro) | 0.0 | Tosu-shi | Saga |
| Map | Map | Shin-Tosu | JR Kyūshū: Kyūshū Shinkansen | 2.0 | Tosu-shi | |
| Map | Map | Kanzaki | | 15.7 | Kanzaki-shi | |
| Map | Map | Saga | | 25.0 | Saga-shi | |
| Map | Map | Kubota | JR Kyūshū: Karatsu | 31.4 | Kubota-chō | |
| Map | Map | Ushizu | | 34.2 | Ogi-shi | |
| Map | Map | Hizen-Yamaguchi | JR Kyūshū: Sasebo | 39.6 | Kōhoku-machi | |
| Map | Map | Hizen-Kashima | | 54.6 | Kashima-shi | |
| Map | Map | Hizen-Hama | | 57.6 | Kashima-shi | |
| Map | Map | Tara | | 67.7 | Tara-chō | |
| Map | Map | Hizen-Ōura | | 75.6 | Tara-chō | |
| Map | Map | Yue | | 87.6 | Isahaya-shi | Nagasaki |
| Map | Map | Isahaya | Shimabara: Shimabara Tetsudō, JR Kyūshū: Ōmura | 100.4 | Isahaya-shi | |
| Map | Map | Kikitsu | JR Kyūshū: Nagasaki Hon (Old line) | 106.9 | Isahaya-shi | |
| Map | Map | Ichinuno | | 109.4 | Isahaya-shi | |
| Map | Map | Urakami | JR Kyūshū: Nagasaki Hon (Old line), Nagasaki: Hon [Urakami-ekimae] | 123.7 | Nagasaki-shi | |
| Map | Map | Nagasaki | Nagasaki: Hon [Nagasaki-ekimae], Nagasaki: Sakuramachi [Nagasaki-ekimae] | 125.3 | Nagasaki-shi |
| Type | Name | Origin - Major stops - Destination | Trains per day | Fastest train | Average speed |
|---|---|---|---|---|---|
| Limited Express Tokkyū 特急 | Kamome かもめ | Hakata - Tosu - Nagasaki | 25 | 1h48 | 86 km/h |
| Hakata - Tosu - Saga | 3 | 38 min | 85 km/h | ||
| Midori みどり | Hakata - Tosu - Hizen-Yamaguchi - Sasebo | 16 | 1h48 | 65 km/h | |
| Huis ten Bosch ハウステンボス | Hakata - Tosu - Hizen-Yamaguchi - Sasebo line - Haiki - Huis ten bosch Runs together with LEX Midori between Hakata and Haiki | 5 | 1h44 | 65 km/h | |
| Rapid Kaisoku 快速 | Seaside Liner シーサイドライナー | Sasebo - Ōmura line - Isahaya - Nagasaki | 13 | 1h32 | 53 km/h |
| Takematsu - Ōmura line - Isahaya - Nagasaki | 1 | 46 min | 52 km/h | ||
| Local Futsū 普通 | Shimonoseki - Hakata - Tosu - Hizen-Yamaguchi - Sasebo line - Haiki | 1 | 5h14 | 36 km/h | |
| Mojikō - Hakata - Tosu - Hizen-Yamaguchi | 1 | 3h47 | 39 km/h | ||
| Tosa - Nagasaki | 6 | 2h46 | 45 km/h | ||
| Tosa - Hizen-Ōura | 2 | 1h42 | 44 km/h | ||
| Tosa - Tara | 2 | 1h19 | 51 km/h | ||
| Tosa - Hizen-Hama | 1 | 1h13 | 47 km/h | ||
| Tosa - Hizen-Kashima | 2 | 1h08 | 48 km/h | ||
| Tosu - Hizen-Yamaguchi - Sasebo line - Sasebo | 1 | 1h52 | 47 km/h | ||
| Tosu - Hizen-Yamaguchi - Sasebo line - Haiki | 4 | 1h35 | 50 km/h | ||
| Tosu - Hizen-Yamaguchi | 12 | 40 min | 59 km/h | ||
| Tosu - Saga | 4 | 26 min | 58 km/h | ||
| Saga - Nagasaki | 1 | 2h24 | 42 km/h | ||
| Hizen-Yamaguchi - Hizen-Hama | 1 | 22 min | 49 km/h | ||
| Hizen-Yamaguchi - Tara | 1 | 44 min | 38 km/h | ||
| Hizen-Yamaguchi - Isahaya | 1 | 1h21 | 45 km/h | ||
| Hizen-Yamaguchi - Nagasaki | 1 | 2h03 | 42 km/h | ||
| Hizen-Ōura - Nagasaki | 1 | 1h20 | 37 km/h | ||
| Yue - Nagasaki | 3 | 48 min | 47 km/h | ||
| Sasebo - Ōmura line - Isahaya - Nagasaki | 2 | 1h46 | 46 km/h | ||
| Haiki - Ōmura line - Isahaya - Nagasaki | 1 | 1h46 | 41 km/h | ||
| Takematsu - Ōmura line - Isahaya - Nagasaki | 1 | 1h01 | 39 km/h | ||
| Isahaya - Nagasaki | 6 | 33 min | 45 km/h | ||
| Trains using old line over Nagayo | |||||
| Local Futsū 普通 | Sasebo - Ōmura line - Isahaya - Nagasaki | 5 | 2h05 | 42 km/h | |
| Haiki - Ōmura line - Isahaya - Nagasaki | 5 | 2h00 | 40 km/h | ||
| Takematsu - Ōmura line - Isahaya - Nagasaki | 1 | 1h33 | 30 km/h | ||
| Isahaya - Nagasaki | 4 | 44 min | 43 km/h | ||
| Kikitsu - Nagasaki | 3 | 36 min | 42 km/h | ||
| Nagayo - Nagasaki | 9 | 15 min | 39 km/h |
| Opened | 1897 - 1898 | Tracks | Single track |
| Mapion | Major stations | Connecting lines | Km | City | Prefecture | |
| Map | Map | Kikitsu | JR Kyūshū: Nagasaki Hon | 0.0 | Isahaya-shi | Nagasaki |
| Map | Map | Nagayo | | 15.4 | Nagayo-chō | |
| Map | Map | Urakami | JR Kyūshū: Nagasaki Hon, Nagasaki: Hon [Urakami-ekimae] | 23.5 | Nagasaki-shi |