| Khallata Naga ඛල්ලාටනාග | |
| King of Anuradhapura | |
| Reign: | 109 BC – 103 BC |
| Predecessor: | Lanja Tissa |
| Successor: | Valagamba |
| Spouse: | Queen Consort Anuladevi |
| Issue: | Mahakuli Mahatissa |
| Royal House: | House of Vijaya |
| Father: | Saddha Tissa |
| Death Date: | 103 BC |
| Religion: | Theravāda Buddhism |
Khallata Naga, also known as Kalunna, was an early monarch of Sri Lanka of the Anuradhapura Kingdom from 109 BC to 103 BC.[1]
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.