The Hunchun–Ulanhot Expressway (Chinese: 珲春—乌兰浩特高速公路), designated as G12 and commonly referred to as the Hunwu Expressway (Chinese: 珲乌高速公路) is a 926.22-kilometre-long expressway (575.53 mi) in the People's Republic of China that connects the cities of Hunchun, Jilin and Ulanhot, Inner Mongolia.

The route parallels much of China National Highway 302.

[1] Changchun-Centre Note: italic indicates the routes that were available in 2013 network plan, but removed in 2022 network plan