Line 4 (Suzhou Metro)

{{Short description|Metro line in Suzhou, Jiangsu, China}}

{{use mdy dates|date=February 2018}}

{{Infobox rail line

| name =

| native_name = 苏州地铁4号线

| logo = SZRT_Line_4_icon.svg

| logo_width = 100px

| color = {{rcr|SZRT|4}}

| image = PM081.jpg

| image_width = 300px

| image_alt =

| caption = A train of Suzhou Metro Line 4

| type = Rapid transit

| system = Suzhou Metro

| status = In operation

| locale =

| start = Longdaobang

| end = Tongli

| stations = 31

| routes =

| open = {{Start date and age|2017|4|15|df=yes}}

| close =

| owner = Suzhou Rail Transit Co., Ltd

| operator = Suzhou Rail Transit Co., Ltd

| character =

| depot =

| stock =

| linelength = {{convert|41.5|km|mi|abbr=on}}

| tracklength =

| gauge = {{RailGauge|1435mm}}

| speed =

| elevation =

| website =

| map =

| map_state = collapsed

}}

Line 4 is a line of the Suzhou Metro. It runs in a north–south alignment from Longdaobang station in Xiangcheng District's the northern suburbs, to the canal town of Tongli in Wujiang District in the south.{{cite news|title=苏州轨交4号线及支线开通试运营 打通南北大"动脉"|url=http://js.xhby.net/system/2017/04/15/030657122.shtml|publisher=无线苏州|date=2017-04-15}} The line is 41.5 km long with 31 stations.

Until October 2024 there was a 11.3 km long branch line with 7 stations. This branch line was later transferred to line 7.{{Cite web|url=http://news.2500sz.com/news/szxw/2016-11/18_3034760.shtml|title=苏州轨道交通4号线及支线预计于2017年4月开通-名城新闻网|website=news.2500sz.com|language=zh-CN|access-date=2017-04-16}}{{cite news|title=苏州轻轨4号线走向基本确定 30个站点抢先看 (The alignment of Line 4, Suzhou Rail Transit was determined)|url=http://news.suzhou.soufun.com/2010-07-30/3611279.htm|accessdate=2012-06-13|newspaper=搜房网|date=2010-07-30|language=Chinese}}