Harold W. Massingham (birth:25 October 1932 Mexborough death:13 March 2011) was a British poet.
He is the son of H. W. Massingham (a collier from Mexborough). He attended the same Mexborough Grammar School as the Yorkshire poet and Poet Laureate Ted Hughes but in a class two years below. He taught at the University of Manchester; students included Steven Waling, and Trevor Griffiths.
Harold Massingham lived in Mexborough, and published three volumes of poetry in 1965, 1972 and 1992.
His work was published in The New Yorker,and Alhambra Poetry Calendar.
- 1968 Cholmondeley Awards for Poets
- The magician, Phoenix Pamphlet Poets Press, 1969
- The Magician's Attic
- Black Bull Guarding Apples. London: Longmans. 1965. 
- Frost Gods, MacMillan, 1972
- Sonatas & Dreams, Littlewood Arc, 1992
- John Matthews, ed. (Oct 1988). "The Finding of Merlin". An Arthurian Reader. Aquarian Press. ISBN 0-85030-778-3.
- "Tree-dream". The Poetry Book Society Anthology 1989-90. Hutchinson. October 1989. ISBN 978-0-09-173992-8.
- Mike Poole & John Wyver, Powerplays: Trevor Griffiths in Television, 1984, London: BFI Publishing, p.12
- Ian McMillan, Vernon Scannell, Yorkshire Post, 23 November 2007
- Jonathan Crowther (2006) A-Z of Crosswords, Collins ISBN 978-0-00-722923-9, ISBN 0-00-722923-2
- Chris Jones, Strange likeness: the use of Old English in twentieth-century poetry, Oxford University Press, 2006
- Harold Massingham Obituary, Yorkshire Post, 19 March 2011
- Paul Britton, Farewell to ‘Mass’: Crossword king Harold Massingham dies, aged 78, Manchester Evening News, 23 March 2011