The Shuangliao–Nenjiang Expressway (Chinese: 双辽–嫩江高速公路), designated as G4512 and commonly referred to as the Shuangnen Expressway (Chinese: 双嫩高速公路), is a partially completed expressway in China.

It is a major north–south expressway that when complete, will connect the cities of Nenjiang City, in Heilongjiang, with Shuangliao, in Jilin, near the border with Inner Mongolia.

[1][2][3] This expressway has formerly been wrongly signed using the NTHS-like code "G47.

"[4][5] Note: italic indicates the routes that were available in 2013 network plan, but removed in 2022 network plan

This People's Republic of China road-related article is a stub.