The Nantong–Suzhou–Jiaxing–Ningbo high-speed railway or Tongsujiayong high-speed railway (Chinese: 通苏嘉甬铁路; pinyin: Tōng-Sū-Jiā-Yǒng tiělù, "Tong", "Su", "Jia" and "Yong" being the abbreviations for Nantong, Suzhou, Jiaxing and Ningbo, respectively) is a high-speed railway line between Nantong and Ningbo in China.

[1] The railway is expected to reduce the journey time from Ningbo to Suzhou and Shanghai to around one hour.

[2] In October 2020, geological surveys began in preparation for the construction of a bridge across Hangzhou Bay which will carry the railway.

[4] The line takes new north–south route which bypasses Shanghai, instead heading via Suzhou, Jiaxing, and Cixi.

This People's Republic of China rail-related article is a stub.