Warakagoda Gnanarathana Thero is a Sri Lankan Buddhist monk who is the present Mahanayaka Thero of the Asgiriya chapter of Siam Nikaya. He was appointed as the 22nd Mahanayake Thera of the Asgiriya Chapter on 7 April 2016, by the Karaka Sangha Sabha of Asgiriya chapter, after the demise of Most Ven. Galagama Sri Aththadassi Mahanayaka Thera.
Theravāda is the most commonly accepted name of Buddhism's oldest existing school.
The school's adherents, termed Theravādins, have preserved their version of Gautama Buddha's teaching or Buddha Dhamma in the Pāli Canon for over a millennium.
Aided by the patronage of Mauryan kings like Ashoka, this school spread throughout India and reached Sri Lanka through the efforts of missionary monks like Mahinda.
Starting at around the 11th century, Sinhalese Theravāda monks and Southeast Asian elites led .