John Ramsden (12 November 1947 – 16 October 2009) was Professor of History at Queen Mary, University of London until his retirement in 2008, and was an authority on the history of the Conservative Party.
Ramsden was born in Sheffield, the son of Cyril (who worked for the National Coal Board) and Mary Ramsden. He attended King Edward VII School from 1959–66 followed by Corpus Christi College, Oxford, where he graduated with a first in modern history.
He moved to Nuffield College, Oxford to pursue doctoral research on "the organisation of the Conservative Party in Britain 1910–30", under Robert Blake and David Butler.
He joined Queen Mary College, London, as a lecturer in History in January 1972.