When did Lan Xang exist?

Lan Xang existed 1353–1707. On this map it is drawn 1363–1578, 1588–1708.

Southeast Asia · Tai kingdoms and Majapahit

Lan Xang

Kingdom · 1353–1707

Type: Kingdom (Lao mandala kingdom; capitals Luang Prabang, then Vientiane)
Existed: 1353–1707
Shown on the map: 1363–1578, 1588–1708 (2 periods)
Peak area: ~378,000 km² (dataset)
Region: Southeast Asia

Origins & foundation

Lan Xang Hom Khao — "the Million Elephants and the White Parasol" — was the first unified Lao kingdom. Its founder Fa Ngum was a prince of Muang Sua (Luang Prabang), raised in exile at the Khmer court; in 1349 the Khmer gave him an army of "Ten Thousand" to claim his grandfather's throne. Campaigning up the Mekong from Champasak, he took Muang Phuan, the Sip Song Chau Tai and finally Muang Sua, and was crowned in 1353. By 1357 he had taken Vientiane, forced Lan Na to cede territory at Chiang Saen, and won Ayutthaya's recognition of Lao control over the Khorat Plateau — a mandala stretching from Sipsongpanna to the Khone Falls. The kingdom's legitimacy drew on the Khun Borom legends and the Phra Bang Buddha image brought from Angkor.

Political history & notable rulers

Samsenthai (r. 1373–1416) consolidated the realm and gained Ming recognition (1402). After his death a decade of regicide under the shadowy queen Maha Devi ("Nang Keo Phimpha the Cruel") saw seven kings in ten years. Stability returned with Chakkaphat, who survived Đại Việt's massive 1479 invasion — the "White Elephant War" — in which Lê Thánh Tông's armies briefly took Luang Prabang before being destroyed. King Visoun (1500–1520) patronised a literary flowering and made the Phra Bang the kingdom's palladium; Photisarath (1520–1548) made Theravada Buddhism the state religion and moved the court toward Vientiane. His son Setthathirath (1548–1571), also briefly king of Lan Na, moved the capital to Vientiane in 1560 and twice defeated Bayinnaung's invasions by guerrilla war — leaving Lan Xang the only independent Tai kingdom — before vanishing on a Khmer campaign in 1571/72. Burma overran the kingdom in 1574; Nokeo Koumane restored independence in 1591–96.

Economy, culture & religion

Lan Xang was a Mekong river state: the river was its artery of trade, war and administration, its rapids marking internal boundaries. Authority ran through some ninety-seven mueang bound to the king, each under a chao mueang; society was simpler than Siam's sakdina order, with the sangha offering education and mobility. Under Sourigna Vongsa (1637–1694) — the kingdom's golden age — laws were revised, courts established, treaties fixed borders and trade, and Vientiane's gilded palace awed the Dutch trader Van Wuysthoff (1641) and the Jesuit Leria (1642), the first Europeans to describe it.

Peak & territorial extent

At its height Lan Xang held the middle Mekong from the Chinese border to the Khone Falls and from the Annamite Range across the Khorat Plateau — among mainland Southeast Asia's largest states, ~378,000 km² on the dataset's reckoning, with a population around 275,000–371,000 (1500–1700).

Decline & end

Sourigna Vongsa executed his own heir for adultery and died in 1694 leaving contested claims; his grandson Kingkitsarat seized Luang Prabang in 1705, and in 1707 the kingdom split into Luang Prabang and Vientiane, with Champasak following in 1713. The successor kingdoms became Siamese vassals in 1779.

Legacy & modern connections

Lan Xang is the foundation of Lao national identity — its name, its kings, and the Phra Bang (housed in Luang Prabang, a UNESCO site) remain state symbols; That Luang in Vientiane, rebuilt by Setthathirath, is the national monument of Laos.

Common questions

What was Lan Xang?: Lan Xang Hom Khao — "the Million Elephants and the White Parasol" — was the first unified Lao kingdom. Its founder Fa Ngum was a prince of Muang Sua (Luang Prabang), raised in exile at the Khmer court; in 1349 the Khmer gave him an army of "Ten Thousand" to claim his grandfather's throne.
When did Lan Xang exist?: Lan Xang existed 1353–1707. On this map it is drawn 1363–1578, 1588–1708.
How large was Lan Xang at its height?: At its height Lan Xang held the middle Mekong from the Chinese border to the Khone Falls and from the Annamite Range across the Khorat Plateau — among mainland Southeast Asia's largest states, ~378,000 km² on the dataset's reckoning, with a population around 275,000–371,000 (1500–1700).
Who ruled Lan Xang?: Samsenthai (r. 1373–1416) consolidated the realm and gained Ming recognition (1402). After his death a decade of regicide under the shadowy queen Maha Devi ("Nang Keo Phimpha the Cruel") saw seven kings in ten years.
How did Lan Xang end?: Sourigna Vongsa executed his own heir for adultery and died in 1694 leaving contested claims; his grandson Kingkitsarat seized Luang Prabang in 1705, and in 1707 the kingdom split into Luang Prabang and Vientiane, with Champasak following in 1713. The successor kingdoms became Siamese vassals in 1779.
What did the economy and culture of Lan Xang rest on?: Lan Xang was a Mekong river state: the river was its artery of trade, war and administration, its rapids marking internal boundaries. Authority ran through some ninety-seven mueang bound to the king, each under a chao mueang; society was simpler than Siam's sakdina order, with the sangha offering education and mobility.
Why does Lan Xang still matter?: Lan Xang is the foundation of Lao national identity — its name, its kings, and the Phra Bang (housed in Luang Prabang, a UNESCO site) remain state symbols; That Luang in Vientiane, rebuilt by Setthathirath, is the national monument of Laos.

Sources

Every source below was consulted while writing this entry.

Wikipedia: Lan Xang en.wikipedia.org/wiki/Lan_Xang
Wikipedia: ប្រវត្តិសាស្ត្រលាវ km.wikipedia.org/wiki/ប្រវត្តិសាស្ត្រលាវ
humansaga.net — lan-xang humansaga.net/empire/lan-xang
wikiwand.com — List of monarchs of Laos www.wikiwand.com/en/articles/List_of_monarchs_of_Laos

This entry was written from the sources above and last updated 10 September 2026.

This entry was researched and drafted with AI from the sources above, and has not been reviewed by a historian. How entries are made

Text available under CC BY-SA 4.0: reuse it with a credit to The World Through Time and a link to this page. Passages drawing on the Wikipedia articles listed above are also licensed CC BY-SA 4.0 by their contributors.

Border geometry for the map itself comes from Cliopatria v0.12 (Seshat Global History Databank, CC-BY-4.0).

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