Shenzhen Metro 12 Line, also known as "Shenzhen Metro Nanbao Line", is a subway line under construction in Shenzhen, Guangdong Province, China. It is expected to be put into trial operation in 2022, and the logo color is lavender.

Shenzhen Metro Phase I 12 starts from Zuopaotai East Station, passes through Nanshan District and Baoan District, and connects Qianhai Shekou Bonded Zone, Nanshan Central District, Baoan Central District, Xixiang District, Airport East District, Fuyong District, Dakonggang District and Exhibition Area in series, and ends at Ocean Garden East Station. The second phase of the project extends to Songgang.

Characteristics of Shenzhen Metro 12 Line:

Subway 12 line is located in Nanshan District and Baoan District, with a total length of 40.56 kilometers. The line starts from Zuopaotai Station in Nanshan District, passes through Nanshan Central District, Baoan Central District, Fuyong District, Dakonggang and Exhibition Area from south to north, and ends at Haishang Garden East Station in Baoan District. The whole line is laid underground along the main road, with a total of 33 stations, including transfer station 18 and 32 main line sections.

New Airport East Depot, Chiwan Parking Lot, Chuangye Road Substation and Lingzhi Main Substation will be built. Shenzhen Metro 12 line starts from Zuopaotai Station and ends at Haiyuan East Station, passing through Nanshan and Baoan Administrative District. The maximum running speed of the line is 80km/h, and it is positioned as a general speed line.