Sourigna Vongsa (ສຸຣິຍະວົງສາທັມມິກຣາດ [suliɲa voŋsaː tʰammikraːt]) was the king of Lan Xang and during his period, it considered the golden age of Laos. He ascended to the throne in 1637.

In 1637, Sourigna Vongsa ascended the throne after the nobles elected him over his two older brothers. King Suriya Vongsa reigned for 57 years which Laos experienced “The Golden Age” in terms of territory, prestige and power

He assured stability by immediately banishing any possible rivals, sending one of his brothers to Vietnam and the other one into a solitary priesthood, and sending his cousins west, towards Siam. He was a strict and austere monarch, and ran the country according to firm laws. He was greatly respected as a ruler, and within five years of his ascension, his reputation reached the Dutch representatives of the Dutch East India Company who were in Phnom Penh. The Jesuit Giovanni Maria Leria arrived in Vientiane at the same time as the Dutch merchants 1641 and received the first European envoys into Laos.

Much of what we know about seventeenth-century Laos comes from the descriptions of these visitors. Despite the disruptions that spanned the period from Setthathirath's death to Sourigna Vongsa's ascension, Lan Xang, as Laos was called, apparently recovered very quickly. Both Van Wuystoff, the Dutchman, and Leria, who spent six years in Laos, were impressed with the nation's prosperity. Van Wuystoff noted the great number of monasteries and the monks, "more numerous than the soldiers of the King of Prussia." John Philip de Marini, who recorded and published Leria's visit, noted that monks went from Siam to Laos "as to University." The support of a large idle population, the monkhood, which harmed Laos' national economic development, nevertheless impressed both visitors. The first chapter of Marini's account is subtitled, The Greatness, Riches and Power of Laos. Both described the free market and flourishing trade, which supplied Europe with gum benzoin, lac, musk ("the first musk that has appeared in Europe from this part of the world." - de Marini) and other products. The palace of the king, de Marini would describe,

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