Somdet Phra Buddhacarya (Thai: สมเด็จพระพุฒาจารย์; RTGS: Phutthachan), or dharma name Upaseṇo (Thai: เกี่ยว อุปเสโณ; RTGS: Kiao Uppaseno), née Kiaw Chokchai(Thai: เกี่ยว โชคชัย) and commonly known as Somdet Kiaw (Thai: สมเด็จเกี่ยว), is a Thai prelate who is currently the abbot of Wat Saket and the Acting Supreme Patriarch of Thailand, the effective leader of all Buddhist monks in Thailand. He was appointed Acting Supreme Patriarch in 2005 due to the failing health of the incumbent Supreme Patriarch Nyanasamvara Suvaddhana. He is a monk of the Mahanikaya order, and is of Thai Chinese descent. His appointment provoked severe criticism from Luang Ta Maha Bua (of the Dhammayuttika Nikaya order) and Sondhi Limthongkul, who claimed that the appointment created two Supreme Patriarchs and contravened the royal prerogative of King Bhumibol Adulyadej. In 4 March 2005, Maha Bua even petitioned King Bhumibol Adulyadej to remove all of Kiaw's royal titles.