Puhar is a town in the Mayiladuthurai district in the southern Indian state of Tamil Nadu. It was once a flourishing ancient port city known as Kaveri Poompattinam, which is described in Post Sangam literature like Silappadikaram, Manimekalai, Paṭṭiṉappālai and Akananuru as the capital of the Early Chola kings in Tamilakam. Puhar is located near the mouth of the Kaveri river, on the sea coast. It is mentioned in the Periplus of the Erythraean Sea.