Line 6 Branch (simplified Chinese: 六号线支线; traditional Chinese: 六號線支線; pinyin: Liùhào Xiàn Zhīxiàn) of Shenzhen Metro, also known as Branch Line 6, is a metro line in Shenzhen.

Phase 1 of Line 6 Branch has a length of 6.13 km (3.81 mi) with four stations, from SIAT to Guangming.

Phase 1 from Shenzhen Institute of Advanced Technology to Guangming opened on 28 November 2022.

[1] Phase 2 has a length of 4.9 km (3.0 mi) with three more stations, from Guangming to Guangmingcheng.

[2] A reserved northern extension from SIAT, currently under planning and not submitted to National Development and Reform Commission, will connect Line 6 Branch with Dongguan Rail Transit Line 1.