Line 4 (Guangzhou Metro)
Line 4 of the Guangzhou Metro is a south-north line on the system that runs between and stations, spanning a total of with 24 stations. The sections of the line from Xinzao to Huangcun and Feishajiao to Nansha Passenger Port is underground, while the section from Jinzhou to Guanqiao is above ground. Line 4's colour is dark green. Like line 5 and 6, trains runs with linear motor technology.
Opening timeline
| Segment | Commencement | Length | Station | Name |
| Xinzao — Wanshengwei | 26 December 2005 | 5 | ||
| Huangge — Xinzao | 30 December 2006 | 6 | ||
| Jinzhou — Huangge | 28 June 2007 | 2 | ||
| Wanshengwei — Chebeinan | 28 December 2009 | 1 | Line 4 & 5 connector project | |
| Chebeinan — Huangcun | 25 September 2010 | 2 | Northern extension | |
| Nansha Passenger Port — Jinzhou | 28 December 2017 | 6 | Southern extension | |
| Qingsheng | 28 December 2017 | Infill station | 1 | Guangshengang XRL connector |