C. Ponnaiyan is an Indian politician. He is one of the founding members of the Anna Dravida Munnetra Kazhagam party. He is the former member of the Tamil Nadu legislative assembly from Tiruchengode constituency in 1977, 1980, 1984 and 2001. He started his career as a lawyer. Attracted by the ideologies of Arignar Anna and Thanthai Periyar, he took to public life at an early age. He has served as Minister of Finance, Education, Industry, Agriculture, Cooperation, Highways, Transport, Law and IT. He was a close confidant of Former Chief Minister of Tamil Nadu Dr. M.G. Ramachandran and served as Minister of Finance under Former Chief Minister Dr. J. Jayalalithaa.