Diyawadana Nilame is the office of the chief lay custodian of the Temple of the Tooth, Kandy, Sri Lanka. Formerly an office of the royal household, at present it is the trustee for the Temple of the Tooth as defined by the Buddhist Temporalities Ordinance of 1931. A ceremonial position, enriched with over two thousand years of history to protect and carry out ancient rituals for the relic of the tooth of the Buddha. The Diyawadana Nilame recognised as a states man has the responsibility of overseeing of all aspects of the Sri Dalada Maligawa. He has the traditional duty of organizing the annual pageant, the Kandy Esala Perahera. The current Diyawadana Nilame is Pradeep Nilanga Dela.

Sri Dalada Maligawa, commonly known in English as the Temple of the Sacred Tooth Relic, is a Buddhist temple in Kandy, Sri Lanka. It is located in the Royal Palace Complex of the former Kingdom of Kandy, which houses the relic of the tooth of the Buddha. Since ancient times, the relic has played an important role in local politics because it is believed that whoever holds the relic holds the governance of the country. The relic was historically held by Sinhalese kings. The temple of the tooth is a World Heritage Site mainly due to the temple and the relic.