The Tien Yen–Lang Son–Cao Bang Expressway (Vietnamese: Đường cao tốc Tiên Yên – Lạng Sơn – Cao Bằng) is a planned expressway in Vietnam.

It will connect Tiên Yên with Trà Lĩnh, a border town further north.

The road is envisioned as a part of an economic corridor from Haiphong to Chongqing and Europe through Khorgos.

The government also expects the expressway to bring Cao Bằng Province economically and culturally closer to the political center Hanoi.

Construction is expected to begin at the end of 2023, and should be completed before 2030.