Patcha Ramachandra Rao (21 March 1942 – 10 January 2010) was a metallurgist and administrator. He has the unique distinction of being the only Vice-Chancellor (2002–05) of the Banaras Hindu University (BHU) who was also a student (1963–68) and faculty (1964–92) at that institution. From 1992 to 2002, Rao was the Director of the National Metallurgical Laboratory, Jamshedpur. After his tenure as Vice-Chancellor of B.H.U., in 2005, he took the reins of the Defence Institute of Advanced Technology (DIAT) as its first Vice-Chancellor. He was to serve DIAT until his superannuation in 2007. From 2007 till the end, Rao was a Raja Ramanna Fellow at the International Advanced Research Centre for Powder Metallurgy and New Materials, in Hyderabad, Andhra Pradesh.
Rao was born on 21 March 1942 to S. R. Narayanaswamy Naidu and Laxmi Bai at Kavutavaram in the Krishna District of Andhra Pradesh. His father Narayanaswamy Naidu, was a government servant and retired as Deputy Registrar of Co-operative Societies while his mother, Laxmi Bai was also educated and studied up to matriculation when very few women were going to school. From his mother's side, Rao is the nephew of Narla Venkateswara Rao, a Telugu language writer, journalist and politician from Andhra Pradesh, Narla Gowri Shankar Rao, an assistant accountant-general (retired) in the Central Government of India, and Narla Tata Rao, a doyen of the power sector in India and a former chairman of the Andhra Pradesh State Electricity Board.
For the early part of his life, Rao's parents home-schooled him and admitted him to the seventh grade directly. He completed formal school at the early age of 13. Thereafter, he went on to study intermediate at the newly established Andhra Loyola College at Vijayawada and moved over to Osmania University, Hyderabad for higher education. At the young age of 19 years, in 1961, Rao graduated with a master's degree in Physics from the Osmania University in Hyderabad India. Thereafter, in 1963, Rao graduated from the Indian Institute of Sciences, Bangalore, with a B.E. degree in Metallurgy. During his second year at I.I.Sc Bangalore, Rao was supported by the Dorabji Tata Trust. His long association with the Banaras Hindu University (B.H.U) began soon afterwards, when his mentor T.R. Anantharaman encouraged him to enroll in the doctoral program at the Department of Metallurgical Engineering at B.H.U (now Indian Institute of Technology (BHU) Varanasi). Rao's pioneering doctoral dissertation in Rapid Solidification laid the foundation for the research in this area in India. He obtained his MSc in 1965 and PhD in 1968.