Ang Chan I or Chan Reachea (Khmer: ចន្ទរាជា; 1476–1566) was the Cambodian king reigned from 1516 to 1566. He was regarded as one of the most illustrious Cambodian kings of the post-Angkor era. He was appointed the ouparach (heir apparent or viceroy) by in 1507. As the viceroy, he ruled the region of Phnom Penh and the eastern provinces. Portuguese missionary Gaspar da Cruz visited Lovek in 1556. He preached the gospel, but in the next year, he had to leave the country disappointedly because most of Cambodians were devout Buddhists and refused to convert to Roman Catholicism.