Pennathur is a panchayat town in Vellore district in the Indian state of Tamil Nadu.

As of 2001[update] India census,[1] Pennathur had a population of 8014.

Males constitute 49% of the population and females 51%.

Pennathur has an average literacy rate of 68%, higher than the national average of 59.5%: male literacy is 76%, and female literacy is 60%.

In Pennathur, 10% of the population is under 6 years of age.