Selaiyur is a suburb of Chennai, India, located on the Tambaram–Velachery Road in the Chennai Metropolitan Area. It was once called Silaiyur. Neighbouring areas include Tambaram, Madambakkam, Rajakilpakkam, Sembakkam, Chitlapakkam and Medavakkam.Once a part of Pallavaram Municipality,it was merged into Tambaram Municipal Corporation in 2021.