Thyagaraya Nagar, popularly known by its abbreviated form T. Nagar, is a neighbourhood in the city of Chennai, India.T. Nagar was constructed between 1923 and 1925 by the Madras Presidency government of the Raja of Panagal as a part of town planning activities initiated according to the Madras Town Planning Act of 1920. The town was named after Justice Party leader Sir P. Theagaraya Chetty. The streets, parks and localities in the new neighbourhood were named after important officials in the provincial government.