Harold Black may refer to:
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Harold Stephen Black
Harold Stephen Black (April 14, 1898 – December 11, 1983) was an American electrical engineer, who revolutionized the field of applied electronics by discovering the negative feedback amplifier in 1927. To some, his discovery is considered the ...
(1898–1983), American electrical engineer
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Harold Black (artist) (1913–1993), American artist
* Sir
Harold Black (civil servant) Sir Harold Black (9 April 1914 – 19 January 1981) was a British civil servant in Northern Ireland. He was Secretary to the Cabinet and Clerk of the Privy Council from 1965 to 1972, and Deputy Secretary, Northern Ireland Office from 1972 to 1974, ...
(1914–1981), British civil servant
{{hndis, Black, Harold