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, Feishajiao to Nansha Passenger Port is underground, while that Jinzhou to Guanqiao is above ground. Line 4's colour is dark green. Within lines 5 and 6, trains runs with linear motor.
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 |