Agastya was a revered Indian sage of Hinduism. In the Indian tradition, he is a noted recluse and an influential scholar in diverse languages of the Indian subcontinent. He is regarded in some traditions to be a Chiranjivi. He and his wife Lopamudra are the celebrated authors of hymns 1.165 to 1.191 in the Sanskrit text Rigveda and other Vedic literature.

The Chiranjivi are a group of immortals who are believed to remain alive on Earth until the end of the current age known as the Kali Yuga, according to Hindu literature.