Harry Bernard Allen (5 November 1911 – 14 August 1992) was one of Britain's last official executioners, officiating between 1941 and 1964. He was chief executioner at 41 executions and acted as assistant executioner at 53 others, at various prisons in England, Scotland, Northern Ireland, the Channel Islands and Cyprus. He acted as assistant executioner for 14 years, mostly to Albert Pierrepoint from 1941 to 1955.