Line 3 of the Harbin Metro () is a rapid transit ring line in Harbin.
The first phase of the line, from to , commenced operations on 26 January 2017. It is 5.45 km long with 5 stations, all of which are underground.
Harbindajie station opened as an infill station on June 16, 2017. Harbindajie station renamed to station on March 20, 2019.
The section from to , and the section from to opened on November 26, 2021.
The remaining section, comprising 9 stations, opened on 25 November 2024.
- Stations in operation <br> - Under construction, opening in 2023 & 2024
Services on the line are provided by six-car Type B trains, which have a total capacity of 1440. These trains are the same as those which run on Line 1.