S. N. Kandaswamy is a distinguished scholar of Tamil literature, particularly focusing on classical Sangam texts and epic poetry. He has produced comprehensive English translations and critical analyses of significant works, including "Ainkurunuru in English With Research Articles, Commentary and Dictionary" and "Kuruntokai in English with Commentary and Dictionary," making ancient Tamil poetry accessible to a wider audience. His scholarship also extends to literary criticism, as seen in "Bharathidasan As a Romantic Poet" and his examinations of the Tamil epic Manimegalai in "மணிமேகலையில் தத்துவச் சிந்தனைகள்" (Philosophical Thoughts on Manimegalai) and "மணிமேகலை காப்பியத் திறனாய்வு" (Review of Manimegalai Archive). Kandaswamy's work, often published by institutions like Tamil University, Thanjavur, and the Institute of Asian Studies, Chennai, reflects a deep engagement with Tamil classical heritage and its philosophical underpinnings.