Naigala Raja Maha Vihara, Buddhist temple in Hambantota District, Sri Lanka.

Naigala Raja Maha Vihara is a Buddhist temple in Weeraketiya built on the Pabbata Vihara plan, with a central image house and a 62-foot-long pond. Excavations in 2009 uncovered stupas, walls, bodhigharas and ponds, and in 2013 a two-storey Anuradhapura-period image house was found.

The temple dates to ancient times and became the subject of archaeological excavations in 2009. Those digs uncovered numerous monuments and ruins, including a circular stone that was used to house a Buddha relic.

The temple takes its name from a legend where a snake guided King Mahanaga to a rock with water during severe drought. This story continues to shape how pilgrims and visitors connect with this place spiritually.

The temple lies about 2 km from Weeraketiya junction and 8 km from Mulkirigala Raja Maha Vihara. The archaeological site includes a pond measuring 62 feet by 9 feet and a circular stone with a hollow. Visitors can see the ruins of stupas, walls, bodhigaras and ponds across the premises.

A circular stone with a hollow at the temple is believed to have hidden the Buddha's tooth relic, placed there by Queen Sugala to protect it from enemies. The vihara's Bodhi tree is said to be a sapling of the Sri Maha Bodhi, planted by an arahant.