Line 3 of Zhengzhou Metro () is a rapid transit line in Zhengzhou that runs in a northwest - southeast direction. The line uses six car Type A trains. The line opened on December 26, 2020.
Line 3 is operated by Zhengzhou China Construction Shenzhen Railway Rail Transit Co., Ltd (A joint venture between China State Construction Engineering, Shenzhen Metro Group and Zhengzhou Jiaotong Investment) with a registered capital of 1 billion RMB. The company was established on December 26, 2018; mainly responsible for the investment, financing, construction, operation and maintenance of Line 3.