(closed in 2023) is not included in the map.|800px
Line 1 of Line 1 Line 1 is built upon the old surface-level line, and was opened in 2006. It is with 32 stations (currently 29 stations in operation). The old at-grade Shuanglin station was closed on 28 December 2016 and reopened as a new underground station on 3 December 2018. The old rolling stocks (DKZ9 Series) were replaced at the same time. Line 1's color is
red.
Line 2 of Line 2 Line 2 opened for trial operations on 1 July 2012. Due to a structural accident in
Jianguodao Station, Line 2 was operated as two separate sections from July 2012 to 28 August 2013, when the affected station opened after being rebuilt. The line is long with 20 stations. Line 2's color is
yellow.
Line 3 of Line 3 Line 3, running southeast–northwest, opened on 1 October 2012. It is long with 26 stations. of track is underground, with at ground level and the rest on elevated viaducts. Of the 21 stations, one is elevated, one is at ground level and the other 19 are underground. Line 3's color is
light blue.
Line 4 The southern section of Line 4 will be long. The southern section of Line 4 is opened in December 2021 from
Dongnanjiao to Xinxingcun. Line 4's color is
green.
Line 5 of Line 5 Line 5 runs from Beichenkejiyuanbei to Liqizhuangnan with 28 stations. The line is long with 29 stations. On 22 October 2018, the section from Danhebeidao to Zhongyiyifuyuan (26 stations) became operational. On 31 January 2019, the line was extended one station to Beichenkejiyuanbei. On 7 December 2021, the line was extended one station to Liqizhuangnan, completing the long, 28.station first phase. On 28 September 2024, the line was again extended one station and 1.3 km to Jinghuadongdao. Line 5 and Line 6 form a loop. It is run by Tianjin Binhai Mass Transit Development Co., Ltd, which becomes a subsidiary of Tianjin Rail Transit Group Corporation since 2017. Line 5's color is
orange.
Line 6 Line 6 runs from to with a total length of . The section from Changhonggongyuan to Nancuiping opened on 6 August 2016. The section from Nansunzhuang to Changhonggongyuan opened on 31 December 2016. The section from Nancuiping to Meilinlu opened on 26 April 2018, and the section from Meilinlu to Lushuidao opened on 28 December 2021. Line 6's color is
magenta.
Line 7 Line 7 started construction in 2019 and will run from Saidalu to Xifengdao. It is 20.06 km long with 15 stations and runs north south. The southern section from Gulou to Saidalu opened on 28 September 2025.
Line 8 Line 8, running from to , opened on 28 December 2021. This line is also the first metro line in Tianjin to use Type A,
GoA4 automated trains. Line 8's color is
violet.
Line 9 of Line 9 Line 9 is an east–west line running just north of the Haihe River. It runs from
Tianjin railway station to
Donghai Road station. It was opened in 2004, spanning with 21 stations. The line provides interchange to the TEDA Tram line. Line 9 was suspended after damage from
the August 2015 explosions, and resumed operation on 16 December from
Tianjin Railway Station to
Tianjin Pipe Corporation Station. Now, the damaged part has been reopened, along with two new stations:
Zhangguizhuang and
Taihulu. The line is operated by Tianjin Binhai Mass Transit Development Co., Ltd, which is a subsidiary of Tianjin Rail Transit Group Corporation since 2017. Line 9's color is
blue.
Line 10 The Phase 1 of Line 10, from
Yudongcheng to Yutai, is long with 21 stations. It opened in 2022. Line 10's color is
chartreuse.
Line 11 Line 11 runs from Shuishanggongyuanxilu to Dongliliujinglu. It is 23.8 km long with 21 stations. Eastern part of the phase 1 of line 11, from Dongjiangdao to Dongliliujinglu (11 stations, ) was opened on 28 December 2023. The western part of phase 1 to Shuishanggongyuanxilu, with 10 more stations, opened on 28 December 2024.
Jinjing Line The Jinjing Line is a long suburban rapid transit line from Jinghuadongdao station to Jinghai District. This line is opened in 28 September 2024. There are through service between Line 5 and Jinjing Line. In a second phase, an extension and a branch are planned.
Line Z4 Line Z4 is a long rapid transit line in Binhai New Area, Tianjin. The elevated section opened on 18 January 2026, and the section (mainly underground) is planned to open in 2027. == Former service ==