Udayagiri Raja Maha Vihara
උදයගිරි රජ මහා විහාරය
The Stupa at the Vihara
Religion
Affiliation	Buddhism
District	Ampara
Province	Eastern Province, Sri Lanka
Location
Location	Udayagiri, Ampara, Sri Lanka
Geographic coordinates	07°22′56.7″N 81°37′57.4″E / 7.382417°N 81.632611°E / 7.382417; 81.632611
Architecture
Type	Buddhist Temple

Udayagiri Raja Maha Vihara (Sinhalaː උදයගිරි රජ මහා විහාරය) is an ancient Buddhist Temple situated in Ampara District, Sri Lanka. The temple has been built in the village called Udayagiri, and located about 1 km (0.62 mi) distance to Ampara – Mahaoya Road. The temple has been formally recognised by the Government as an archaeological site in Sri Lanka.^[1]

It is believed that the history of this temple goes back over 1000 years. But according to the features of archaeological remains in the Vihara premises, archaeologists assume that this temple may have been established during the pre–Christian era.^{[2][better source needed]} A stone pillar with an inscription at the entrance of Vihara states that this Vihara was exempted from taxes by two generals of King Udaya I (901 - 912).