Chao Manthaturath (also spelled Manthathourat or Mangthaturat; Lao: ເຈົ້າມັນທາຕຸຣາດ; 1772–7 March 1837) was the king of Luang Phrabang from 1819 to 1836.^[1]

He was a son of king Anouruttha.^[1] In 1791, he was appointed as heir presumptive to the Luang Phrabang throne with the title Raxavong by Siamese.^{[citation needed]} He was crowned by Siamese at the age of 43.^[1] From 1825 to 1826 he joint the monkhold in Bangkok,^[1] leaving his country to be administered by Siamese officials.^{[citation needed]} In 1826, he refused to join Anouvong's Rebellion against Siamese. He died on 7 March 1837.^[1] Siamese did not confirm his son to succeed the throne until 1839.^[1]