Viengxay is a city located in Laos. It serves as a geographical point within the country's interior.
The region near Viengxay, specifically in Houaphanh Province of north-eastern Laos, is home to the Viengxay Caves. This extensive network of caves is situated within limestone mountains and is historically significant for its role during the Second Indochina War. During this conflict, 480 of these caves were utilized by the Pathet Lao as shelters to protect against American bombardment.