Zhongnanshan Tunnel, or Qinling Zhongnanshan Tunnel (Chinese: 秦岭终南山公路隧道) in Shaanxi province, China, is the longest two-tube road tunnel in China.

The 18,040-metre (11.21 mi) long tunnel, crosses under the Zhongnan Mountain (Zhongnanshan).

It opened on 20 January 2007, becoming part of the Xi'an-Ankang Highway between the Changan and Zhashui counties.

[1] The cost to build the tunnel was 3.2 billion yuan (US$410 million).

[1] The maximum embedded depth of the tunnel is 1640 metres below surface level.