Alexander Grant McLean (1824 – 28 September 1862) was a Surveyor General of New South Wales, (then a colony, now a state of Australia).
[1] McLean was born in Scotland, the second son of Captain John Leyburn Maclean, principal superintendent of convicts (1837–55), and his wife Jane Eliza, née Grant.
[1] On 11 May 1842, McLean was appointed to a position on the department of the Surveyor General of New South Wales, Thomas Mitchell.
On 12 August 1859 McLean was made acting Surveyor General by the then minister for lands, John Robertson (later Premier of New South Wales).
McLean authorised the compilation of a map of New South Wales (published 1861); his work facilitated the introduction of the Robertson Land Acts.