Villianur, or Villianour, is a commune panchayat and the headquarters of the Villianur taluk of Puducherry District. Kameeswarar temple is the major landmark in the town.
Villianur is located at a distance of 9 kilometres south of Puducherry Municipality. It forms a part of the Puducherry urban agglomeration. The town houses famous hindu temple Kokilambigai udunurai sri thirukameswarar Kameeswarar temple. Located in the banks of Sankaraparani River. surrounded by more industries. It has several years old Villianur railway station,formed during french rule.
According to the 2001 census, Villianur had a population of 104,000. It is the third largest town in Puducherry District after Puducherry and Ozhukarai.