Ramachandran Nagaswamy (born 10 August 1930) is an Indian historian, archaeologist and epigraphist who is known for his work on temple inscriptions and art history of Tamil Nadu.
He served as the founder-Director of the Tamil Nadu Archaeology Department.
He was also instrumental in starting the annual Chidambaram Natyanjali festival in 1980.
He is an authority in Chola Bronzes.
He was awarded India's third highest civilian award the Padma Bhushan in 2018.