S. R. Raja s/o Raghunathan is an Indian politician of Tamil Nadu. He was elected as the Tamil Nadu Member of the legislative assembly from Tambaram constituency as a Dravida Munnetra Kazhagam candidate in the 2016 Tamil Nadu Legislative Assembly election and 2006 Tamil Nadu Legislative Assembly election. He lost the Tambaram constituency to T. K. M. Chinnayya. in the 2011 election, but won back in the 2016 election. Raja, a sitting MLA was dropped as the party's official candidate for the 2026 election