K. Rangan is a linguist and scholar specializing in Dravidian languages. His works include "Toward Formulating Formal Phonological Rules of Tolkappiyam - Eluttatikaram," a detailed linguistic analysis of the classical Tamil grammar text, and studies on specific grammars such as "Purki Grammar" and "Balti Phonetic Reader." He has also contributed to the field by publishing the "Proceedings of The Thirteenth All India Conference of Dravidian Linguists."