Tamilakam was the geographical region inhabited by the ancient Tamil people, covering the southernmost region of the Indian subcontinent. Tamilakam covered today's Tamil Nadu, Kerala, Puducherry, Lakshadweep and southern parts of Andhra Pradesh and Karnataka. Traditional accounts and the Tolkāppiyam referred to these territories as a single cultural area, where Tamil was the natural language and permeated the culture of all its inhabitants. The ancient Tamil country was divided into kingdoms. The best known among them were the Cheras, Cholas, Pandyans and Pallavas. During the Sangam period, Tamil culture began to spread outside Tamilakam. Ancient Tamil settlements were also established in Sri Lanka and the Maldives (Giravarus), prior to the migration of Prakrit speakers.

The Chera dynasty, was a Sangam age Tamil dynasty who unified various regions of the western coast and western ghats in southern India to form the early Chera empire. The dynasty, known as one of the Three Crowned Kings of Tamilakam alongside the Chola and Pandya, has been documented as early as the 4th to 3rd centuries BCE. Their governance extended over diverse territories until the 12th century CE.