Nittoor Srinivasa Rao or Nittur Srinivasa Rao (Kannada: ನಿಟ್ಟೂರು ಶ್ರೀನಿವಾಸ ರಾವ್) (24 August 1903 – 12 August 2004) was a Gandhian who participated in the Indian independence movement. He was the Chief Justice of the High Court of Mysore State (now Karnataka) and also the first chief of the Central Vigilance Commission of India. He was also chosen as the acting Governor of the Mysore state and was the first person to translate Mahatma Gandhi's autobiography to the Kannada language.
Nittoor Srinivasa Rau was born in Bangalore into a Smartha Brahmin family. His father, Nittoor Shamanna, was a school teacher and the head master of a school in Chitradurga. His mother, Seethamma, was the sister of M. N. Krishna Rao, a Diwan of Mysore kingdom. Rau's family hailed from the village of Nittoor in Gubbi Taluka of Tumkur district (now in Karnataka), and his family was known by the name of their village in the usual south Indian style. Rau's elder sister Puttamma was the mother of C.K.Nagaraja Rao, a noted Kannada litterateur who was nurtured and mentored by Rau.
As per Indian tradition, his parents arranged a suitable match for him, and Rau was married at a very young age (he was fourteen and his wife was ten) to his first cousin Padmavathamma, daughter of his maternal uncle Diwan M. N. Krishna Rao. The marriage was blessed with four children, being two sons and two daughters. His elder son, N.S. Chandrashekara, is a Senior Advocate, Littérateur and a noted historian of princely Mysore. His second son, N.S. Subbanna, retired as vice-president of the Kirloskar Electric Company, Bangalore. Rau named his elder daughter Jayaseetha in honour of his beloved mother (Seethamma). She was married, in a match arranged by Rau in the traditional Indian way, to Dr. Visvanatha Premanand, a physicist who took his PhD from the Sorbonne and is a professor at the University of Minnesota. Rau's second daughter, Lalita, was a distinguished teacher of the visually impaired for many years before her retirement to spend time with her children and grandchildren.