| Southern Railway Headquarters | |
| Native Name: | M&SM Headquarters Building |
| Location: | Poonamallee High Road, Chennai, India |
| Address: | Park Town, Chennai, Tamil Nadu 600 003 |
| Coordinates: | 13.0826°N 80.2771°W |
| Completion Date: | 1921 |
| Inauguration Date: | 11 December 1922 |
| Architectural Style: | Indo-Saracenic |
| Architect: | N. Grayson |
| Main Contractor: | H. H. Wadia and Bros |
| Owner: | Southern Railways |
Southern Railway headquarters administrative building, Chennai, is an Indo-Saracenic structure located adjacent to the on Poonamallee High Road.
Built in 1921 as the new Madras and Southern Mahratta Railway Company (MSMR) headquarters (successor of Madras Railway Company), replacing the general office of MSMR at Royapuram Railway Station, the building now functions as the headquarters of the Southern Railways. The building was built at a cost of 3 million by H. H. Wadia and Bros, a leading Porbandar-based contractor.[1] [2] Built for the first time in India in reinforced concrete in classical and Dravidian styles, the building was designed by N. Grayson, a 'company architect', working for the Madras & Southern Mahratta Railway.[3] It took nine years and over 3 million to complete the building and was inaugurated on 11 December 1922.
The central bay has two rectangular wings, both of which are arranged around a lush courtyard. The structure was built with large windows to allow the sea breeze to waft through, reaching the courtyard from the front and then going out through the opposite wing.