Sai Nagar is an sublocality in Kolathur, Chennai North, Chennai, Chennai District, Tamil Nadu, India. Kolathur (0.0 Km), Retteri Lake (3.19 Km), Ponniammanmedu (3.38 Km), Surapet (3.92 Km), Villivakkam (4.11 Km) are the nearby areas to Sai Nagar. Manjampakkam, Puthagaram, Chennai are the nearby cities to Sai Nagar.