The Polonnaruwa Vatadage (Sinhala: පොළොන්නරුව වටදාගේ) is an ancient structure dating back to the Polonnaruwa period of Sri Lanka. It is believed to have been built during the reign of Parakramabahu I to hold the tooth relic of the Buddha, or during the reign of Nissanka Malla to hold the alms bowl used by the Buddha. Both these venerated relics would have given the structure a great significance and importance at the time. Located within the ancient city of Polonnaruwa, it is the best preserved example of a vatadage in the country, and has been described as the "ultimate development" of this type of architecture.