P. V. Rajamannar was born to Dewan Bahadur P. Venkataramana Rao, an eminent lawyer who was a Madras High Court Judge and later Chief Justice of Mysore High Court. He completed his schooling at Pachaiyappa's High School, Madras and did his graduation in the Presidency College, securing First Class in English and Philosophy in B.A in 1921. In B.L he won the Jurisprudence prize in 1923.
In 1924, Rajamannar started his law practice joining his father's chambers. In 1944 P.V. Rajamannar was appointed Advocate-General in succession to Sir Alladi Krishnaswami Aiyar. His appointment also made Rajamannar one of the youngest Advocate-General at 43 years of age. He also appeared as the Public Prosecutor in one of the most sensational murder cases in South India, Lakshmikanthan murder case involving two popular actors and a Journalist with criminal history.
Chief Justice
Later in 1945, P. V. Rajamannar was appointed as Judge of Madras High Court and in 1948 Rajamannar became the first Indian to be elevated as Chief Justice of Madras High Court. He retired in 1961 and continued his active services for government by heading various committees
During the years 1966-1969 P. V. Rajamannar was also the Chairman of The Fourth Finance Commission of India. In addition Rajamannar was also the Chairman for the Fourth Law Commission and the Banking Laws Committee.
In 1969, P.V. Rajamannar was appointed as the Chairman of a 3-member committee P.V. Rajamannar committee to study the State Autonomy and Centre-State relations by the then newly elected DMK government under its Chief Minister Dr. M. Karunanidhi.
Arts of literature
In addition to his career in Law and administration P. V. Rajamannar was active in Arts and was the first appointed chairman of Sangeet Natak Akademi in New Delhi. During his college years and later he edited a Telugu literary journal called Kala and winning the Ramarayaninger Prize for a Telugu Work 'Representative Government in Ancient India''. 1964, he was awarded the Sangeet Natak Akademi Fellowship the highest honour conferred by Sangeet Natak Akademi, India's National Academy for Music, Dance and Drama.
Honours and legacy
P. V. Rajamannar was conferred Honorary Doctorates from Madras University, Andhra University and Annamalai University. Justice P V Rajamannar Salai in K. K. Nagar, Chennai is named in his honour. He was also nominated twice to Upper House in Madras and on two occasions acted as Governor.