Ammapettai is a panchayat town in Thanjavur district in the state of Tamil Nadu, India.

As of 2001[update] India census,[1] Ammapettai had a population of 13,816.

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

Ammapettai has an average literacy rate of 73%, higher than the national average of 59.5%; with 54% of the males and 46% of females literate.

Railway Station : Ammapettai (approx 2.5 km From Bus Stand)