Infobox monarch | name =Setthathirathເສດຖາທິຣາຊ | title =King of Lan Xang King of Lan Na | image =Setthathirat.JPG | caption =Statue of King SetthathirathPha That Luang, Vientiane | succession = | reign =1548-1571 | predecessor =Photisarath I | successor =Sen Soulintha | coronation =1550 | succession1 = | predecessor1 =Chiraprapha | successor1 =Mekuti | reign1 =1546-1551 | coronation1 =1546 | spouse = Ton Thip of Lan NaTon Kham of Lan NaThepkasattri of AyutthayaKaew Pra Kham, daughter of Sen Soulintha | issue = Prince Nokaeo KoumanePrincess Khau PhengOther Princesses | dynasty =Khun Lo | father =Photisarath I | mother =Yotkhamthip of Lan Na | religion =Therevada Buddhism | birth_name =Setthavangso | birth_date =24 January 1534 | birth_place =Muang Sua, Lan Xang | death_date =1571 | death_place =Attapeu, Lan Xang | date of burial = | place of burial = | regnal name = Samdach Brhat-Anya Chao Udaya Budhara Bhuwana Brhat Jaya Jettha Maharajadhiraja Bhuwanadya Adhipati Sri Sadhana Ganayudha | Setthathirath (ເສດຖາທິຣາດ; 24 January 1534 – 1571) or Xaysettha (ໄຊເສດຖາ; ไชยเชษฐาธิราช, , ) is considered one of the great leaders in Lao history. Throughout the 1560s until his death, he successfully defended his kingdom of Lan Xang against military campaigns of Burmese conqueror Bayinnaung, who had already subdued Xieng Mai (Chiang Mai) in 1558 and Ayutthaya in 1564. Setthathirath was a prolific builder and erected many Buddhist monuments including Wat Xieng Thong in Luang Prabang, Haw Phra Kaew, Wat Ong Teu Mahawihan and the Pha That Luang in Vientiane. Setthathirath also known as Chaiyachettha or Chaiyaset or Jayajestha, Son of the King Photisarath of Lan Xang, he was crowned King of Lanna after the death of his grandfather, Ketklao the previous King of Lanna, who died without a male heir to the throne and gave his daughter Princess Yotkhamtip in marriage to his father King Photisarath of Lan Xang. When King Ketklao died, there was no other descendant available to succeed him.