Chengdu Metro Line 27 (Chinese: 成都地铁27号线; pinyin: Chéngdū Dìtiě Èrshíqī Hào Xiàn) is a rapid transit line in Chengdu, Sichuan, China.

It is a tangential line that runs diagonally from the west to the north of Chengdu.

On 21 August 2019, the National Development and Reform Commission approved the 4th stage of development plan from Chengdu Rail Transit, which includes Line 27.

From the north, the line has a 7.52 km long elevated section with 6 stations, followed by a 17.34 km underground section with 17 stations.

Phase 1 started construction on 18 May 2020,[1][2] and is opened on 19 December 2024.