Orissa Balu (S. Balasubramani – born: 07 April 1963) is a Historian, Tamil Researcher, Scientist, and Writer from Tamil Nadu, India. Presently he is researching sea turtles and understanding human migration by Tamil group before now. He is moreover doing intensive evaluation on Kumari Kandam. He obtained his establish Orissa balu because of his works on Orissan custom when he moved to Orissa in 1989.
Orissa Balu researches on misplaced cities, and ocean routes using turtle guides for mapping the turtle corridor. He actively interacts with people throughout the places he travels. Evaluation on Kalinga-Tamil relationship gave him the curiosity to find Tamil historic previous.