Edward Hugh Simpson CB (10 December 1922[1] – 5 February 2019[2][3][4]) was a British codebreaker, statistician and civil servant.

Edward Hugh Simpson was introduced to the thinking of mathematical statistics as a cryptanalyst at Bletchley Park (1942–45).

[9] Simpson grew up in Northern Ireland, and attended Coleraine Academical Institution, and he then studied at Queen's University, Belfast (BSc, 1st cl.

[1] In Autumn 1942, Simpson was recruited to work at Bletchley Park, initially as a codebreaker in the Italian Naval Section.

On his retirement in 1982, Simpson continued to be involved in education as Chairman of the National Assessment Panel for the Schools’ Curriculum Award (1983–95), held fellowships at the Universities of Birmingham and Warwick, and served as Chair of Governors of Dixon's City Technology College in Bradford from 1989 to 1999, which involved overseeing the building of the college from a greenfield site.

At the age of 95, Simpson contributed two chapters on the cryptanalytic process Banburismus, developed by Alan Turing at Bletchley Park during World War II, to a review of the code-breaking project published in 2017.