P. K. Raghava Warrier FRCS (13 August 1921 – 26 March 2011[1]) was an Indian Cardiothoracic surgeon, author and social activist from Kerala.

It was during one of the freedom rallies in his student days[2] that he met his future wife, Devaki Pallam, then an apprentice of Gandhi.

After completing the undergraduate education at Madras Medical College in June 1946, Warrier worked as a demonstrator of anatomy between July 1947 and December 1948.

Between June 1950 and August 1959, he worked as a Civil Assistant Surgeon in various government hospitals throughout South India including Coimbatore, Cochin and Trivandrum as well as a brief stint in Minicoy Island.

He was sympathetic to the early communist movement of Kerala, and was opposed to government-employed doctors performing in private practise.