Muttaiya Annamalai Muthiah Ramaswamy (30 September 1931 – 2 December 2015) was an Indian industrialist, politician and race horse owner who served as Chairman of the Chettinad Group of Companies and a member of the Upper House of the Parliament of India, the Rajya Sabha for Karnataka representing the Janata Dal (Secular) from 2004 to 2010.^[1][2] Ramaswamy succeeded his older brother M. A. M. Muthiah in 1970 to the title "Kumar-rajah of Chettinad" and held title Raja of Chettinad from 1984 to 2015. With a net worth of Rs.1,500 crores, Ramaswamy was one of the richest individuals in Chennai city.^[3] He was also popular in the racing circles of Chennai city and winner of 600 horse racing classics.^[4]

Ramaswamy was born in Madras, Tamil Nadu on 30 September 1931, as the second son of Sir M. A. Muthiah Chettiar, the Kumar-rajah of Chettinad. Ramaswamy had an older brother Muthiah, upon whose death in 1970 at the age of 40, Ramaswamy inherited the title Kumar-rajah of Chettinad and Chairmanship of the Chettinad Group of Companies. Ramaswamy was also a maternal cousin of former Indian finance minister, P. Chidambaram.

Ramaswamy married Sigappi Aachi on 6 February 1951. He died on 2 December 2015.^{[5] [6]}