John Frederick "Wilkie" Wilkinson FRCP FRIC (10 June 1897, Oldham, Lancashire — 13 August 1998, Knutsford, Cheshire) was a chemist, physician, and pioneering haematologist. He was among the first physicians to experiment with chemotherapy for leukaemia. After secondary education at Arnold School, Wilkinson began in 1913 his study of chemistry at the University of Manchester. In 1916 he joined the Royal Naval Air Service. In 1964 in Bucklow, Cheshire, he married Marion Crossfield (1920–2003), a Major in the Women's Royal Army Corps, but they separated in the 1990s.