Ramachandran Nagaswamy (10 August 1930 – 23 January 2022) was an Indian historian, archaeologist and epigraphist. He was known for his work on temple works and art history of Tamil Nadu. He was a Director of the Tamil Nadu Archaeology Department from 1966 until 1988. He was awarded India's third highest civilian award the Padma Bhushan in 2018. Nagaswamy was born in Madras, India.