thumb|Train on the Hachikō Line, 2020
The is a 92.0 km (57.2 mi) regional railway line owned and operated by East Japan Railway Company (JR East). It is located within Tokyo, Saitama, and Gunma Prefectures in Japan. It connects Hachiōji Station in Hachiōji, Tokyo with Kuragano Station in Takasaki, Gunma Prefecture.
Services
Komagawa Station in Hidaka, Saitama is the boundary point between two distinct sections. The southern section from Hachiōji to Komagawa is electrified at 1,500 V DC. Some trains terminate at Komagawa, while others continue over the Kawagoe Line to Kawagoe Station.
The non-electrified northern section connects Komagawa with Kuragano. All trains continue on the Takasaki Line to , where transfer to the Jōetsu and Hokuriku Shinkansen is available. There are no through services connecting the southern and northern halves of the line.
The Hachikō Line takes the first kanji of its name from the first character of and the second kanji from the first character of .
Stations
- All trains stop at every station.
- Stations marked "o" or "^" allow passing; stations marked"<nowiki>|</nowiki>" do not. Stations marked "∥" are double-tracked.
Hachiōji - Komagawa
{| class="wikitable" rules="all"
|-
!rowspan="2"|Station
!rowspan="2"|Japanese
!colspan="2"|Distance (km)
!rowspan="2"|Transfers
!rowspan="2"| Track
!colspan="2" rowspan="2"|Location
|-
!Between<br />stations
!Total
|-
|
|八王子
|style="text-align:center;"| -
|style="text-align:right;"|0.0
|
|style="text-align:center;"|o
|rowspan="3"|Hachiōji
|rowspan="6"|Tokyo
|-
|
|北八王子
|style="text-align:right;"|3.1
|style="text-align:right;"|3.1
|
|style="text-align:center;"|o
|-
|
|小宮
|style="text-align:right;"|2.0
|style="text-align:right;"|5.1
|
|style="text-align:center;"|o
|-
|
|拝島
|style="text-align:right;"|4.8
|style="text-align:right;"|9.9
|
|style="text-align:center;"|o
|Akishima
|-
|
|東福生
|style="text-align:right;"|2.8
|style="text-align:right;"|12.7
|
|style="text-align:center;"|o
|Fussa
|-
|
|箱根ヶ崎
|style="text-align:right;"|3.0
|style="text-align:right;"|15.7
|
|style="text-align:center;"|o
|style="white-space:nowrap;"|Mizuho, Nishitama District
|-
|
|金子
|style="text-align:right;"|4.8
|style="text-align:right;"|20.5
|
|style="text-align:center;"|o
|Iruma
|rowspan="3"|Saitama
|-
|
|東飯能
|style="text-align:right;"|5.1
|style="text-align:right;"|25.6
|18px Seibu Ikebukuro Line
|style="text-align:center;"|o
|Hannō
|-
|
|高麗川
|style="text-align:right;"|5.5
|style="text-align:right;"|31.1
| Kawagoe Line (through to )<br> Hachikō Line (for Takasaki)
|style="text-align:center;"|o
|Hidaka
|}
Komagawa - Takasaki
{| class="wikitable" rules="all"
|-
!rowspan="2"|Station
!rowspan="2"|Japanese
!colspan="2"|Distance (km)
!rowspan="2"|Transfers
!rowspan="2"| Track
!colspan="2" rowspan="2"|Location
|-
!Between<br />stations
!Total
|-
|
|高麗川
|style="text-align:right;"|5.5
|style="text-align:right;"|31.1
| Kawagoe Line<br> Hachikō Line (for Hachiōji)
|style="text-align:center;"|o
|Hidaka
|rowspan="12"|Saitama
|-
|
|毛呂
|style="text-align:right;"|5.8
|style="text-align:right;"|36.9
|
|style="text-align:center;"|o
|Moroyama, Iruma District
|-
|
|越生
|style="text-align:right;"|2.7
|style="text-align:right;"|39.6
|18px Tobu Ogose Line
|style="text-align:center;"|<nowiki>|</nowiki>
|Ogose, Iruma District
|-
|
|明覚
|style="text-align:right;"|5.2
|style="text-align:right;"|44.8
|
|style="text-align:center;"|o
|Tokigawa, Hiki District
|-
|
|小川町
|style="text-align:right;"|8.0
|style="text-align:right;"|52.8
|18px Tobu Tojo Line
|style="text-align:center;"|o
|rowspan="2"|Ogawa, Hiki District
|-
|
|竹沢
|style="text-align:right;"|3.5
|style="text-align:right;"|56.3
|
|style="text-align:center;"|<nowiki>|</nowiki>
|-
|
|折原
|style="text-align:right;"|4.0
|style="text-align:right;"|60.3
|
|style="text-align:center;"|<nowiki>|</nowiki>
|rowspan="3"|Yorii, Ōsato District
|-
|
|寄居
|style="text-align:right;"|3.6
|style="text-align:right;"|63.9
|18px Tobu Tojo Line<br /> Chichibu Main Line
|style="text-align:center;"|o
|-
|
|用土
|style="text-align:right;"|4.5
|style="text-align:right;"|68.4
|
|style="text-align:center;"|<nowiki>|</nowiki>
|-
|
|松久
|style="text-align:right;"|2.7
|style="text-align:right;"|71.1
|
|style="text-align:center;"|<nowiki>|</nowiki>
|Misato, Kodama District
|-
|
|児玉
|style="text-align:right;"|4.8
|style="text-align:right;"|75.9
|
|style="text-align:center;"|o
|Honjō
|-
|
|丹荘
|style="text-align:right;"|4.1
|style="text-align:right;"|80.0
|
|style="text-align:center;"|<nowiki>|</nowiki>
|Kamikawa, Kodama District
|-
|
|群馬藤岡
|style="text-align:right;"|4.7
|style="text-align:right;"|84.7
|
|style="text-align:center;"|o
|rowspan="2"|Fujioka
|rowspan="3"|Gunma
|-
|
|北藤岡
|style="text-align:right;"|3.7
|style="text-align:right;"|88.4
|
|style="text-align:center;"|^
|-
|
|倉賀野
|style="text-align:right;"|3.6
|style="text-align:right;"|92.0
| Takasaki Line (for )
|style="text-align:center;"|∥
|Takasaki
|-
!colspan="8" style="text-align:center;|Through to on the Takasaki Line
|-
|
|高崎
|style="text-align:right;"|4.4
|style="text-align:right;"|96.4
|15px Joetsu Shinkansen<br />15px Hokuriku Shinkansen<br /> Shinetsu Main Line<br /> Joetsu Line<br /> Ryōmō Line<br /> Agatsuma Line<br /> Jōshin Dentetsu Jōshin Line
|style="text-align:center;"|∥
|Takasaki
|Gunma
|}
Rolling stock
- 209-3500 series 4-car EMUs x 5 (Kawagoe Line/Hachiko Line services since 7 May 2018)
- E231-3000 series 4-car EMUs x 6 (Kawagoe Line/Hachiko Line services since 19 February 2018)
- HB-E220 series hybrid DMUs (since 1 December 2025)
From 2017, former E231-0 series ten-car sets based at Mitaka Depot for use on Chūō–Sōbu Line services were reformed and converted to become four-car E231-3000 series sets based at Kawagoe for use on Kawagoe Line and Hachiko Line services. The first set entered revenue service on the line on 19 February 2018.
From 2018, former 209-500 series ten-car sets based at Mitaka Depot for use on Chūō–Sōbu Line services were reformed and converted to become four-car 209-3500 series sets based at Kawagoe for use on Kawagoe Line and Hachiko Line services.
<gallery>
File:JR East 209-3500 series Hachikō Line 20180607.jpg|209-3500 series
File:JR East E231-3000 series Hachikō Line 20180302.jpg|E231-3000 series
File:JRE-Kiha110-114.jpg|KiHa 110 series
</gallery>
Former rolling stock
- KiHa 35 DMUs (until 15 March 1996) until 2022)
- E233 series EMUs (Chūō Line (Rapid) through services between Komagawa and Haijima, from 17 March 2007 until 11 March 2022)
<gallery>
File:Hachiko Line KiHa 35 Yorii 19920808.jpg|Hachiko Line KiHa 35 DMUs passing at Yorii Station in August 1992
File:103-3003 Matoba - Kasahata 20040605.JPG|A Hachiko Line 103-3000 series EMU in June 2004
File:103-3501 Nishi-Kawagoe - Matoba 20040605.JPG|A Hachiko Line 103-3500 series EMU in June 2004
File:201 series set 9 Komagawa Station 20030826.jpg|A Chūō Line 201 series on a Hachiko Line through service in August 2003
File:JR East 205-3000 series Hachikō Line 20171030.jpg|205-3000 series
File:JR East 209-3000 series Hachikō Line 20171030.jpg|209-3000 series
File:Jreast 209-3100.jpg|209-3100 series
File:JR East E233-0 set H55 Oume Special Rapid.jpg|E233-0 series
</gallery>
History
The first section of the line, named the Hachikō North Line (, Hepburn: Hachikō-kita-sen), opened from Kuragano to Kodama on 1 July 1931, followed by the section from Hachioji to Higashi-Hanno, named the Hachikō South Line (, Hepburn: Hachikō-minami-sen), on 10 December 1931. The Hachiko North Line was extended southward from Kodama to Yorii on 25 January 1933, and the Hachiko South Line was extended northward from Higashi-Hanno to Ogose on 15 April 1933. and the southern section began through service operations to the Kawagoe Line to Kawagoe Station. Also from the same date until 11 March 2022, some morning rush hour services left the Hachikō Line at Haijima Station and travel to Tokyo via the Ōme Line and Chūō Line; the reverse happened during the evening rush.
Starting 12 March 2022, the southern section from Hachiōji to Komagawa (and through services to the Kawagoe Line) began one-man driver only operation services using the existing 209-3500 and E231-3000 series EMUs.
From the start of the revised timetable on 15 March 2025, single-car services between Komagawa and Takasaki were discontinued.
Accidents
At 07:40 on 24 August 1945, a head-on collision at the resulted in 105 fatalities.
The Hachikō Line derailment in 1947 is Japan's worst rail accident since World War II in terms of fatalities.