Alumni of the University of Aberdeen

John Mackintosh Howie (23 May 1936 – 26 December 2011) was a Scottish mathematician and prominent semigroup theorist.

Alexander Robertson FRS (12 February 1896 – 9 February 1970) was a British chemist. He was awarded the Davy Medal in 1952 "In recognition of his researches into the chemistry of natural products, particularly the wide range of glycosides, bitter principles and colouring matters containing heterocyclic oxygen atoms". He is known for his organic chemistry research, particularly in the investigation of natural products.

Gavin Greig (1856–1914) was a Scottish folksong collector, playwright, novelist and teacher.
He edited James Scott Skinner's biggest collection of music, The Harp and Claymore Collection, providing harmonies for Skinner's compositions, and he was jointly responsible for compiling The Greig-Duncan Folk Song Collection, with the Rev J.B. Duncan (1848–1917). A selection from this collection of over 3,000 songs and tunes was published in 1925. Two volumes were published in 1981-1982, but the full collection, in eight volumes, was only finally published between 1981 and 2002.He was also the author of the Doric Scots play Mains Wooin', which was very popular in the North East of Scotland before World War II. His novels include Morrison Gray: or, Life in a Buchan Schoolhouse serialised in the Peterhead Sentinel between May 1896 and January 1897, The Hermit o' Gight serialised in the Buchan Observer between 1898 and 1899. and the historical romance Logie o' Buchan published in Aberdeen in 1899.Greig was related to Robert Burns on his mother's side and to Edvard Grieg on his father's side.

Scott Martin Rennie (born 31 March 1972) is a Scottish clergyman who is the Minister of Crown Court Church. He was formerly Minister of Brechin Cathedral from 1999 to 2009 and Queen's Cross Church, Aberdeen until 2022.

Sir Ewan Forbes, 11th Baronet, (6 September 1912 – 12 September 1991), was a Scottish nobleman, general practitioner and farmer. Forbes was a trans man; he was christened Elizabeth Forbes-Sempill and officially registered as the youngest daughter of John, Lord Sempill. After an uncomfortable upbringing, he began presenting as a man in the 1930s, following a course of medical treatments in Germany. He formally re-registered his birth as male in 1952, changing his name to Ewan, and was married a month later.
In 1965, he stood to inherit the baronetcy of his elder brother William, Lord Sempill, together with a large estate. This inheritance was challenged by his cousin, who argued that the re-registration was invalid; under this interpretation, Forbes would legally be considered a woman, and thus unable to inherit the baronetcy. The legal position was unclear, and it took three years before a ruling by the Court of Session, which held him to be intersex, finally led to the Home Secretary recognising his claim to the title. The case was heard in great secrecy, with the effect that it was unable to be considered in other judgments on the legal recognition of gender variance, but has become more widely known since his death in 1991.

James Douglas Cran (28 January 1944 – c. 1 June 2023) was a British Conservative Party politician. He was the Member of Parliament (MP) for Beverley (1987–1997) and for Beverley and Holderness (1997–2005).