Hanoi–Đồng Đăng railway (Vietnamese: Đường sắt Hà Nội–Đồng Đăng) is a railway line in the country of Vietnam. It is a single-track standard-gauge and metre-gauge (dual-gauge) line connecting the capital Hanoi to Đồng Đăng, on the China-Vietnam border in Lạng Sơn Province. It has a total length of 162 km (101 mi). At the border, the Hanoi–Đồng Đăng railway connects with the Hunan–Guangxi railway in China. The station on the Chinese side of the Friendship Pass is Pingxiang. Along with the North–South railway, the Hanoi–Đồng Đăng railway line is part of a rail system across the Eurasian continent.