Perambalur is a town in the Indian state of Tamil Nadu. It is the headquarters of Perambalur district and Perambalur taluk (sub-district). As of 2011 census, the town had a population of 49,648.

Perambalur is one of the 38 districts in the state of Tamil Nadu, India. The district headquarters is located at Perambalur. The district occupies an area of 1,752 km2 and had a population of 565,223 with a sex-ratio of 1,003 females for every 1,000 males in 2011.