Sir John Peter Grant, GCMG, KCB, (28 November 1807 – 6 January 1893), was a British colonial administrator who served as Lieutenant-Governor of Bengal (1859–1862) and as Governor of Jamaica.

His parents were the similarly named John Peter Grant, who came from Rothiemurchus, Inverness-shire, and his wife, Jane, a daughter of William Ironside from Houghton-le-Spring, County Durham.

He joined the Bengal Civil Service in the following year and spent some time at Fort William College in Calcutta before being appointed as an assistant magistrate in Bareilly.

[2] Grant was responsible for the disestablishment of the Anglican Church in Jamaica, which took place in 1870,[3] and he also established a constabulary in 1867[4] as well as instituting Crown Colony rule with a nominated council there.

[1] On 16 February 1835, Grant married Henrietta Isabella Phillippa Plowden at Calcutta Cathedral.