Tamil Nadu National Law University (TNNLU) was established by the Government of Tamil Nadu by an Act of State Legislature (Act No. 9 of 2012) to provide quality legal education at the global level. TNNLU is the brainchild of the former Hon'ble Chief Minister Dr. J Jayalalithaa who laid its foundation stone on 13th February 2012.

TNNLU is located on 25 acre campus in the Tiruchirappalli-Dindigul NH 45, at Navalurkuttappattu Village, about 12 kilometers from Tiruchirappalli Railway Junction / Central Bus Stand.