Sithulpawwa Rajamaha Viharaya is an ancient Buddhist monastery located in Hambantota District, South Eastern Sri Lanka. Situated 18 km east of the pilgrimage town Katharagama, it is believed to have been built in the 2nd century B.C by King Kavantissa.

This ancient monastery with a history of over 2200 years, was a place of worship for devotees as well as a center of Buddhist education for Buddhist monks. Paintings of the Anuradhapura era and the ruins of stone Buddha images, Bodhisattva images, Image Houses, Circular Relic Houses are spread throughout the monastery premises.