Ram Sharan Sharma was an Indian historian and Indologist who specialised in the history of Ancient and early Medieval India. He taught at Patna University and Delhi University (1973–85) and was visiting faculty at University of Toronto (1965–1966). He also was a senior fellow at the School of Oriental and African Studies, University of London. He was a University Grants Commission National Fellow (1958–81) and the president of Indian History Congress in 1975. It was during his tenure as the dean of Delhi University's History Department that major expansion of the department took place in the 1970s. The creation of most of the positions in the department were the results of his efforts. He was the founding Chairman of the Indian Council of Historical Research (ICHR) and a historian of international repute.

Medieval India refers to a long period of post-classical history of the Indian subcontinent between the "ancient period" and "modern period". It is usually regarded as running approximately from the breakup of the Gupta Empire in the 6th century CE to the start of the early modern period in 1526 with the start of the Mughal Empire, although some historians regard it as both starting and finishing later than these points. The medieval period is itself subdivided into the early medieval and late medieval eras.