Khallata Naga, also known as Kalunna, was an early monarch of Sri Lanka of the Anuradhapura Kingdom from 109 BC to 103 BC. The king had built 32 pasadas around the brazen palace.
Khallata Naga was the third son of Saddha Tissa, and younger brother of Thulatthana and Lanja Tissa. In the period of his reign, three rebel princes, Tissa, Abha and Uttara tried to seize his throne.
The king is credited with the construction of Kurundi Viharaya.