Vang Vieng is a town in the Vientiane Province in Laos. It is popular with tourists, specifically backpackers, seeking adventure sports as well as its karst topography. It is on the Nam Song River, 130km north of Vientiane.

Vientiane province is a province of Laos in the country's northwest. As of 2015 the province had a population of 419,090. Vientiane province covers an area of 15,610 square kilometres (6,030 sq mi) composed of 11 districts. The principal towns are Vang Vieng and Muang Phôn-Hông.