Line 11[6] is a rapid transit line of the Suzhou Rail Transit system.

Construction started on November 27, 2018.

[3][7][8] The line uses driverless 6-car Class B rolling stock operating up to 100 km/h (62 mph).

[9][10] Partial through-running on Line 3 began on December 23, 2023, and full through-running began on June 29, 2024.

Running west-east, the line mainly serves the urban area of Kunshan, and connects it to Suzhou Industrial Park in the west and nearby Shanghai in the east via a transfer at Huaqiao station to Line 11 of Shanghai Metro.