Nikolas Boris Rankov (born 9 August 1954) is a British professor of Roman history at Royal Holloway, University of London.
He was educated at Bradford Grammar School (1963–1973), then subsequently Corpus Christi College, Oxford (MA 1980, DPhil 1987).
Rankov was a Junior Research Fellow at St Hugh's College, Oxford from 1980 to 1983.
This led to establishment of the so-called "Rankov Rule", which states that oarsmen will compete in the race no more than four times as an undergraduate and no more than four times as a graduate.
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