Nathakadayur is a village situated in Erode District. It lies on the Erode-Kangeyam State Highway. Muthur lies in the south-east of Nathakadayur.
Nagamalai Andavar Temple, famous for its musical sclupture in rocks, is located in Arachalur, which is close to Nathakadayur. Other nearby places known for temples are Chennimalai, Sivanmalai, Vellakkovil and Kodumudi.
