China National Highway 219 is a highway which runs along the entire western and southern border of the People's Republic of China, from Kom-Kanas Mongolian ethnic township in Xinjiang to Dongxing in Guangxi. At over 10,000 kilometres (6,214 mi) long, it is part of the China National Highway Network Planning (2013–2030), and once completed it will be the longest National Highway.

The China National Highways (CNH/Guodao) is a network of trunk roads across mainland China. Apart from the expressways of China that are planned and constructed later, most of the CNH are not controlled-access highways.