- The primary deity of the Sangam period was Murugan, who is hailed as Tamil God.
- The worship of Murugan was having an ancient origin and the festivals relating to God Murugan was mentioned in the Sangam literature.
- Murugan was honoured with six abodes known as Arupadai Veedu.
- Other gods worshipped during the Sangam period were Mayon (Vishnu), Vendan (Indiran), Varunan and Korravai.
- The Hero Stone or Nadu Kal worship was significant in the Sangam period and was erected in memory of the bravery shown by the warriors in the battle.