O. Subramanian

{{Short description|Indian politician}}

{{Use dmy dates|date=July 2019}}

O. Subramanian is an Indian politician and former Opposition Leader of the Legislative Assembly Tamil Nadu. He was elected to the Tamil Nadu legislative assembly as an Indian National Congress candidate from Sivaganga constituency in 1977 and 1984 elections[http://eci.nic.in/eci_main/StatisticalReports/SE_1977/StatisticalReportTamil%20Nadu77.pdf 1977 Tamil Nadu Election Results, Election Commission of India][http://eci.nic.in/eci_main/StatisticalReports/SE_1984/StatisticalReportTamilNadu84.pdf 1984 Tamil Nadu Election Results, Election Commission of India] and as an Indian National Congress (Indira) candidate in 1980 election.[http://eci.nic.in/eci_main/StatisticalReports/SE_1980/StatisticalReportTamil%20Nadu%201980.pdf 1980 Tamil Nadu Election Results, Election Commission of India]