Lào Cai ([làːw kāːj]) is a city in the Northwest region of Vietnam. It is the capital of Lào Cai Province. The city borders the city of Hekou Yao Autonomous County, in the Yunnan province of southwest China. It lies at the junction of the Red River (Sông Hồng) and the Nanxi River (Yunnan) approximately 160 miles (260 km) northwest of Hanoi.
It is a market town for timber, and the Lào Cai Railway Station is located on the Hải Phòng railway to Yunnan Province in China.