Vilandai is a village in Kallakurichi district, Tamil Nadu, India. It is situated 8 km away from Thirukovilur. It is in SH 9 of Thirukovilur to Thiruvannamalai road via Manalurpettai. It is 190 km away from the state capital, Chennai.

The local economy is based on agriculture. Water is supplied by Sathanur Dam.

The South Pennaru River passes through Villandai. It has one Government High School and Panchayath School.

It comes under the Thirukovilur constituency for state elections and Villupuram constituency for lok sabha elections. In 2017 it had a population of more than 5000.