# Rapid transit in South Korea

* Seoul Capital Area - 22 lines
* Busan - 6 lines
* Daegu - 3 lines
* Daejeon - 1 line
* Gwangju - 1 line
Rapid transit systems operate in six major South Korean cities, except for Sejong.

## Currently operational

Rapid transit systems :
| System | Locale | Lines | Stations | Length (km) | Commencement |
| Seoul Subway (inc. Incheon Subway) | Seoul Capital Area | 23 | 768 | 1,262.2 | 197415 August 1974 |
| Busan Metro | Busan–Gyeongnam Area | 06 | 158 | 0205.6 | 198519 July 1985 |
| Daegu Metro | Daegu–Gyeongbuk Area | 03 | 090 | 0083.7 | 199726 November 1997 |
| Gwangju Metro | Gwangju | 01 | 020 | 0020.6 | 200428 April 2004 |
| Daejeon Metro | Daejeon | 01 | 022 | 0022.7 | 200616 March 2006 |

### Seoul capital area

* Metropolitan Rail
** Korail operates the following commuter lines: Bundang Line, Gyeongchun Line, Gyeongui–Jungang Line, Suin Line, Gyeonggang Line, and parts of metro lines Line 1, Line 3, Line 4.
** Korail Airport Railroad operates AREX
** NeoTrans operates Shinbundang Line
** E-Rail operates Seohae Line
* Urban Rail
** Seoul Metro operates Line 2, Line 5, Line 6, Line 7, Line 8, and parts of lines Line 1, Line 3, Line 4, and Line 9 Second Extension.
** Seoul Metro Line9 (a joint venture between Veolia Transport and Hyundai Rotem) operates Line 9 First Extension
** Incheon Transit operates the whole Incheon subway system (I1 & I2), as well as sections of Seoul Subway Line 7.
* Light Metro Rail
** Uijeongbu Light Rail operates U Line
** Yongin Rapid Transit operates EverLine
** UI trans operates Ui LRT
Rapid transit lines in Seoul National Capital Area :
| Operator | Line | Stations | Length (km) | Terminuses | Commencement |
| Seoul Metro | Seoul Subway Line 1 | 10 | 7.8 | Seoul–Cheongnyangni | 15 August 1974 |
| Seoul Metro | Seoul Subway Line 2 | 51 | 60.2 | Main: loop line; Branches: Seongsu–Sinseol-dong, Sindorim–Kkachisan | 31 October 1980 |
| Seoul Metro | Seoul Subway Line 3 | 34 | 38.2 | Jichuk–Ogeum | 12 July 1985 |
| Seoul Metro | Seoul Subway Line 4 | 26 | 31.1 | Danggogae–Namtaeryeong | 20 April 1985 |
| Seoul Metro | Seoul Subway Line 5 | 51 | 52.3 | Main: Banghwa–Sangil-dong; Branch: Gangdong–Macheon | 15 November 1995 |
| Seoul Metro | Seoul Subway Line 6 | 38 | 35.1 | Eungam–Sinnae | 7 August 2000 |
| Seoul Metro and Incheon Transit Corporation | Seoul Subway Line 7 | 51 | 57.1 | Jangam–Seongnam | 11 October 1996 |
| Seoul Metro | Seoul Subway Line 8 | 17 | 17.7 | Amsa–Moran | 23 November 1996 |
| Seoul Metro Line9 & Seoul Metro | Seoul Subway Line 9 | 38 | 40.6 | Gaehwa–VHS Medical Center | 24 July 2009 |
| Ui-Sinseol Trans | Ui LRT | 15 | 11.1 | Bukhansan Ui(Doseonsa)–Sinseol-dong | 1 July 2012 |
| South-Seoul LRT | Sillim Line | 11 | 7.8 | Saetgang–Gwanaksan | 28 May 2022 |
| NeoTrans Co. Ltd. | Shinbundang Line | 16 | 33.4 | Sinsa–Gwanggyo | 28 October 2011 |
| Yongin Rapid Transit | Everline | 15 | 18.1 | Giheung–Jeondae–Everland | 26 April 2013 |
| Uijeongbu Light Rail Transit | U Line | 15 | 11.1 | Balgok–Tapseok | 1 July 2012 |
| Airport Railroad | AREX | 13 | 63.8 | Seoul–Incheon International Airport Terminal 2 | 23 March 2007 |
| Korail | Seoul Subway Line 1 Gyeongin Line Byeongjeom Depot Line section of Gyeongwon Line section of Gyeongbu Line section of Janghang Line section of Gyeongbu High Speed Railway | 93 | 211.1 | Main: Yeoncheon–Cheongnyangni, Seoul Station–Incheon; Branches: Guro–Sinchang, Geumcheon-gu Office–Gwangmyeong, Byeongjeom–Seodongtan | 15 August 1974 |
| Korail | Seoul Subway Line 3 Ilsan Line | 10 | 19.2 | Daehwa–Jichuk | 30 January 1996 |
| Korail | Seoul Subway Line 4 Gwacheon Line Ansan Line | 23 | 39.4 | Namtaeryeong–Oido | 15 January 1993 |
| Korail | Gyeongui–Jungang Line Yongsan Line section of Gyeongwon Line | 55 | 121.7 | Main: Yongmun–Munsan; Branch: Seoul–Gajwa | 16 December 2005 (Jungang Line) 1 July 2009 (Gyeongui Line) |
| Korail | Gyeongchun Line Mangu Line | 24 | 81.3 | Sangbong–Chuncheon | 21 December 2010 |
| Korail | Suin-Bundang Line | 63 | 104.5 | Cheongnyangni–Incheon | 12 September 2020 |
| Korail | Gyeonggang Line | 11 | 54.8 | Pangyo–Yeoju | 24 September 2016 |
| E-Rail | Seohae Line | 21 | 47 | Ilsan–Wonsi | 16 June 2018 |
| Incheon Subway | Incheon Subway Line 1 | 29 | 29.4 | Gyeyang–International Business District | 6 October 1999 |
| Incheon Subway | Incheon Subway Line 2 | 27 | 29.1 | Geomdan Oryu–Unyeon | 30 July 2016 |

### Busan–Ulsan–Gyeongnam area

* Metropolitan Rail
** Korail operates the following commuter line: Donghae
* Urban Rail
** Busan Transportation operates lines 1, 2, 3, and 4
* Light Metro Rail
** B&G Metro operates the Busan–Gimhae light rail
Rapid transit lines in Busan :
| Operator | Line | Stations | Length (km) | Terminuses | Commencement |
| Busan Transportation Corp. | Busan Metro Line 1 | 40 | 40.5 | Sinpyeong–Nopo | 19 July 1985 |
| Busan Transportation Corp. | Busan Metro Line 2 | 42 | 45.2 | Jangsan–Yangsan | 30 June 1999 |
| Busan Transportation Corp. | Busan Metro Line 3 | 17 | 18.3 | Suyeong–Daejeo | 28 November 2005 |
| Busan Transportation Corp. | Busan Metro Line 4 | 14 | 12.7 | Minam–Anpyeong | 30 March 2011 |
| B&G Metro | Busan–Gimhae Light Rail Transit | 21 | 23.4 | Sasang–Kaya University | 9 September 2011 |
| Korail | Donghae Line | 23 | 65.7 | Bujeon–Taehwagang | 30 December 2016 |

### Daegu–Gyeongbuk area

* Daegu Metropolitan Transit operates the whole subway system.
Rapid transit lines in Daegu :
| Operator | Line | Stations | Length (km) | Terminuses | Commencement |
| Daegu Metropolitan Transit | Daegu Metro Line 1 | 30 | 25.9 | Daegok–Ansim | 26 November 1997 |
| Daegu Metropolitan Transit | Daegu Metro Line 2 | 29 | 31.4 | Munyang–Yeungnam University | 18 October 2005 |
| Daegu Metropolitan Transit | Daegu Metro Line 3 | 30 | 23.9 | KNU Medical Center–Yongji | 23 April 2015 |

### Daejeon

* Daejeon Metropolitan Express Transit operates the whole subway system.
Rapid transit lines in Daejeon :
| Operator | Livery | Line | Stations | Length (km) | Terminuses | Commencement |
| Daejeon Metropolitan Express Transit | | Daejeon Metro Line 1 | 22 | 22.7 | Panam–Banseok | 16 March 2006 |

### Gwangju

* Gwangju Metropolitan Rapid Transit operates the whole subway system.
Rapid transit lines in Gwangju :
| Operator | Livery | Line | Stations | Length (km) | Terminuses | Commencement |
| Gwangju Metropolitan Rapid Transit | | Gwangju Metro Line 1 | 20 | 20.6 | Nokdong–Pyeongdong | 28 April 2004 |