A Lưới is a rural district of Thừa Thiên-Huế Province in the North Central Coast region of Vietnam. It is located west in the highly mountainous area of A Shau Valley bordering Laos. The population includes many Bru, Hoa and Tà Ôi people. As of 2003 the district had a population of 38,616. The district covers an area of 1,229 km² and its capital lies at A Lưới, a former French airfield, later used by the Americans in Operation Delaware and then by the North Vietnamese for courier flights.
Many areas and mountains in the A Luoi region became historically significant in the mid-late 1960s during the Vietnam War, such the Battle of A Shau, the 5th Special Forces Camp that was overrun in 1966, as well as the 4,878-foot Dong Re Lao Mountain best known as the "Signal Hill" that was seized by 1st Cavalry Division LRRP / Rangers in 1968 during Operation Delaware. Also, A Bia Mountain, known as the Hamburger Hill that was seized by members of the 101st Airborne Division.
A Lưới is connected to the former French colonial capital and coastal city, Huế, one of the main historical cities in central Vietnam by National Road 49, a road notorious for poor safety because of the mountainous terrain and poor road surface. The A Lưới District has one town and 21 communes. The central town has gas stations, and a few guest-houses for travelers
The nearest airports to A Lưới are Phu Bai Airport (about 32.14 miles / 51.73 km), Da Nang Airport (about 65.99 miles / 106.2 km), Saravane Airport (about 66.9 miles / 107.66 km), Dong Hoi Airport (about 95.75 miles / 154.1 km), Tamky Airport (about 96.21 miles / 154.83 km). (All distances are linear distances).