Somdet Phra Ariyavangsagatayana (Thai: สมเด็จพระอริยวงศาคตญาณ; 26 June 1927), born Amborn Prasatthapong (Thai: อัมพร ประสัตถพงศ์), is the current Supreme Patriarch of Thailand and Superior General of the Dhammayut Order. Ordained as a bhikkhu in 1948 with the Dhamma name of Ambaro (Thai: อมฺพโร). In 2008 he was appointed abbot of Wat Ratchabophit in Bangkok. In 2017 he was appointed Supreme Patriarch by King Vajiralongkorn, succeeding Vajirañāṇasaṃvara who died in 2013.