Henry Samuel Chapman (21 July 1803 – 27 December 1881) was an Australian and New Zealand judge, colonial secretary, attorney-general, journalist and politician.
Chapman was born at Kennington, London, the son of Henry Chapman, English civil servant, and his wife Ann, daughter of Rev. Thomas Hart Davies. Chapman was educated privately at Bromley, Kent. In 1818, he entered a bank, then in 1823 emigrated to Quebec, Canada where he went into business as a commission merchant. In 1833 he started the first Canadian daily newspapers, the radical Montreal Daily Advertiser, in association with Samuel Revans.
In 1835, Chapman returned to England as a salaried intermediary between the Legislative Assembly of Lower Canada and its friends in the House of Commons of the United Kingdom. Chapman remained in England for some time and took up the study of law, being admitted to the bar of the Middle Temple in 1840. Five years earlier he had published The Act for the Regulation of Municipal Corporations . . . with a complete index and notes. He was also involved in journalism and various Liberal reform movements e.g. the anti-corn law agitations. He served on several Royal Commissions on industry, e.g. on the Yorkshire wool industry, and contributed to reviews and to the seventh edition of the Encyclopædia Britannica.