The South Australian Company, also referred to as the South Australia Company, was formed in London on 9 October 1835, after the South Australia (Foundation) Act 1834 had established the new British Province of South Australia, with the South Australian Colonization Commission set up to oversee implementation of the Act.

British colonisation of South Australia describes the planning and establishment of the colony of South Australia by the British government, covering the period from 1829, when the idea was raised by the then-imprisoned Edward Gibbon Wakefield, to 1842, when the South Australia Act 1842 changed the form of government to a Crown colony.