Sidharth Luthra (Hindi: सिद्धार्थ लूथरा; born 16 February 1966) is a senior advocate at the Supreme Court of India. In July 2012, Sidharth Luthra was appointed as the Additional Solicitor General of India at the Supreme Court and represented the union and various state governments in matters relating to fundamental rights, electoral reforms, criminal law and policy issues. He resigned from this position in May 2014. He is the son of K.K. Luthra who was also a senior advocate and brother of senior advocate Geeta Luthra.
Luthra specialises in criminal law, white-collar crimes and cyber frauds. He studied law at the University of Delhi where he completed his LLB in 1990 and then did an MPhil in Criminology from the University of Cambridge in 1991. He was conferred an Honorary Doctorate of Law by Amity University, Noida, India, in 2015.
Luthra is also a member of the Delhi State Legal Services Authority and the Vice-President of the Indian Criminal Justice Society. He also sits on the advisory board of two Indian legal journals, the Delhi Law Times and the Delhi Reported Judgements. Luthra dedicates nearly 30 to 40 percent of his cases to pro bono.
Apart from litigation, Luthra also teaches law in India and abroad. He is a visiting professor at Northumbria University at Newcastle, United Kingdom and an Honorary Professor at the Amity University, Noida, Uttar Pradesh.