Line 2 of the Dongguan Rail Transit (Chinese: 东莞轨道交通2号线; pinyin: Dōngguǎn Guǐdào Jiāotōng Èr Hào Xiàn) is a rapid transit line in Dongguan.

The line currently has 15 stations and is 37.743 kilometres (23.452 mi) long, from Dongguan railway station to Humen railway station.

Construction of Line 2 began in 2010.

[2][3] Phase 3 of Line 2 is 17.1 km in length with 9 stations.

Construction started in August 2022.