Prehistoric human occupation is evidenced by the first stone tools in the province, dating back between 100,000 and 12,000 years. The first bronze tools date to 2000 BCE. The region was then the center of the Sikhottabong Kingdom. The Pha That Sikhottabong
stupa is on the grounds of a 19th-century monastery in
Thakhek. Sikhottabong was a kingdom in Indo-China. From the 7th to 10th century, the region was culturally and economically influenced by
Champa, and then by that of Angkor until the 13th century.
Khmer Empire ruins dating to 553 and 700 CE have been found at Heuan Hin. In the 20th century, Savannakhet province was 1 of the seats of the struggle for independence. Prime Minister
Kaysone Phomvihane originated in the province. The town was bombed and then occupied by Thai armed forces during the
Franco-Thai War. During the
Vietnam War, the eastern part of the province was crossed by the
Ho Chi Minh trail. It was bombed by U.S. forces and loyalists. Some areas are still under the threat of
unexploded ordnance. In 2007, the
Second Thai–Lao Friendship Bridge was opened across the Mekong from Savannakhet to
Mukdahan, Thailand. In April 2008, a chance discovery was made at Meuang Kabong consisting of of gold and of silver objects, and pillars and traces of brick walls. Missionaries came here, evidenced by a Catholic church in Savannakhet. ==Demographics==