S. Ramaswamy Naidu (c. 1901 – January 1969) was an Indian politician and former Member of the Legislative Assembly. He was elected to the Tamil Nadu legislative assembly as an Indian National Congress candidate from Sattur constituency in 1952 election, from Sivakasi constituency in 1957 and 1962 elections as Indian National Congress candidate. He was again elected from Sattur constituency as a Swatantra Party candidate in 1967 election.