V. P. Kalairajan (born 15 June 1961) is an Indian politician and was a member of the 13th and 14th Tamil Nadu Legislative Assemblies from the Theagaraya Nagar constituency in Chennai district. He represented the All India Anna Dravida Munnetra Kazhagam (AIADMK) party. Now He is in DMK. Kalairajan won the Theagaraya Nagar constituency as an AIADMK candidate in the 2006 and 2011 state assembly elections.