Cora Naga (Coranaga) or Chora Naga (62-50 BC) was Buddhist King of Anuradhapura in the 1st century BC, who ruled from 62 BC to 50 BC. He succeeded his cousin Mahakuli Mahatissa as King of Anuradhapura and was succeeded by Kuda Tissa.
Mahavansa/Chapter 34 tells ....Vatta Gamani's son known as Coranaga lived as a rebel under the rule of Mahacula. When Mahaculi had departed: he came and reigned. Those places, where he had found no refuge during the time of his rebellion, eighteen vihäras, did this fool destroy. Twelve years did Coranaga reign. And eating poisoned (food) that his consort gave him the evildoer died and was reborn in the Lokantarika-hell. After his death king Mahaculi's son ruled three years as king, being known by name Tissa. But Coranaga's spouse, the infamous Anulä, had done her infamous (consort) to death, giving him poison, because she was enamoured of one of the palace-guards. And for love of this same palace-guard Anulä now killed Tissa also by poison and gave the government into the hands of that other.