The Chennai Metropolitan Development Authority (CMDA), formerly known as the Madras Metropolitan Development Authority (MMDA), is the nodal planning agency of Chennai in the Indian state of Tamil Nadu. The CMDA administers the Chennai Metropolitan Region, spread over an area of 5,904 km2 (2,280 sq mi) and covers the districts of Chennai, Thiruvallur, Chengalpattu, Ranipet and Kancheepuram. It was set up for the purposes of planning, co-ordination, supervising, promoting and securing the planned development of the Chennai Metropolitan Area. It coordinates the development activities of the municipal corporations, municipalities and other local authorities.

Chennai Mofussil Bus Terminus, officially Puratchi Thalaivar Dr. M.G.R. Bus Terminus, is a bus terminus located in Chennai, India, providing inter-state bus transport services. It is located on the Inner Ring Road in Koyambedu and is one of the largest bus terminus by area in India.