A. H. Halsey, English sociologist and academic (b. 1923)
Albert Henry 'Chelly' Halsey (13 April 1923 – 14 October 2014) was a British sociologist. He was Emeritus Professor of Social and Administrative Studies at the Department of Social Policy and Intervention, University of Oxford, and a Fellow of Nuffield College, Oxford.

Halsey 'worked in what he called the "political arithmetic" tradition throughout his career, with the dual tasks of documenting the state of society, and addressing social and political issues through "experimental social administration"'He presented the BBC's annual Reith Lectures in 1978.