Line 27 of Chongqing Rail Transit is a rapid transit line in Chongqing, China.
Line 27 (Bishan to Huimin section) will be long, all stations except Bishan will be located underground. Trains will run at a maximum speed of . Line 27 trains will through operate with the Bitong Line and continue to Tongliangxi in Tongliang District. The line will feature passing loops for express services.
Construction started in February 2022.
Construction of the Yangtze River Tunnel of Line 27 (about 800 meters long) started in May 2024.