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John Hardman (born 1939), British businessman •
Sir John Hardman (1694–1755), British merchant, politician, and slave trader •
John Hardman (stained glass maker) (1766–1844), British stained glass maker, founder of John Hardman & Co. •
John Hardman Powell (1827–1895), British stained glass maker, of John Hardman & Co. •
John Hardman (footballer) (1940-1998), English footballer, see
List of Rochdale A.F.C. players (25–99 appearances) ==Other uses==