Varatantu (वरतन्तु) is a sage in Hinduism. He establishes a school of thought called Vāratantavīya.
Varatantu is featured in the Skanda Purana, having a dialogue with Nandi with other sages.
The disciple of Varatantu, Kautsa, seeks money from the Raghu in the Raghuvamsha.
In regional tradition, he is believed to have had a large ashram in Bharuch for the education of children in the kingdom of the second Raghu, the grandfather of Rama.