P. K. Raghava Warrier FRCS (Malayalam: പി. കെ. രാഘവ വാര്യര്) (13 August 1921 – 26 March 2011) was a cardiothoracic surgeon, author and social activist from Kerala, India.
P. K. R. Warrier, the youngest son in his family, enrolled for medical studies at Madras Medical College during the early 1940s. As a student, he was actively involved in India's freedom struggle. It was during one of the freedom rallies in his student days that he met his future wife, Devaki Pallam, then an apprentice of Gandhi. Dr. PKR Warrier's father was Rao Bahadur Dr. Pulakkat Krishna Warrier. His mother was Sreedevi Krishna Varier. He hails from Nellaya, Palakkad district, Kerala. His children are Mr. DK Warrier & Mrs. Anasooya Shaji.
Having completed his undergraduate education at Madras Medical College in June 1946, he worked as a demonstrator of anatomy between July 1947 and December 1948. He remained in Madras training as an unofficial house surgeon and senior house surgeon under Dr. Mohan Rao and Dr. C.P.V. Menon at the General Hospital between January 1949 and June 1950. 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.
Warrier then moved to London to attain his Fellowship of the Royal College of Surgeons. After receiving the Fellowship in January 1960, he went on to receive training in cardiothoracic surgery in Stoke-on-Trent and Queen Elizabeth Hospital, Birmingham until 1962.