Geoffrey A. Tandy
|Died||1969 (aged 68–69)|
|Occupation||marine biologist, broadcaster|
|Known for||Work at Bletchley Park|
Geoffrey A. Tandy (1900–1969) was a British marine biologist and broadcaster.
Tandy graduated from Oxford University in 1921, and pursued graduate studies at Birkbeck College, in the University of London. He was employed at the Natural History Museum in London from 1926 to 1948, specialising in the biology of algae, after which he worked for the British Foreign Office until 1954. 
A friend of T. S. Eliot, Tandy wrote a "Broadcasting Chronicle" for The Criterion, and was the first to broadcast Old Possum's Book of Practical Cats in 1937. During the Second World War he worked at Bletchley Park, allegedly invited there after the Ministry of Defence confused the word "cryptogamist" with "cryptogramist". At Bletchley his technical expertise allowed him to salvage a waterlogged codebook which helped crack the Enigma code.
- "Search Results". www.nhm.ac.uk. Retrieved 2018-08-07.
- Todd Avery (2006). Radio Modernism: Literature, Ethics, and the BBC, 1922–1938. Ashgate Publishing, Ltd. p. 139. ISBN 978-0-7546-5517-6.
- Valerie Eliot; John Haffenden, ed. (2012). The Letters of T.S. Eliot: Volume 3: 1926–28. Yale University Press. p. 18. ISBN 978-0-300-18889-9.
- Craig R. Whitney (2 November 1991). 2 More T.S. Eliot Poems Found Amid Hundreds of His Letters, The New York Times
- Amy Freeborn (26 March 2014). How a seaweed scientist helped win the war, NaturePlus
- David J. Collard (22 June 2013). "Old Possum and the limbs of Satan"
- Richard Fortey (2008). Dry Store Room No. 1: The Secret Life of the Natural History Museum, p. 168.
- Tandy; Geoffrey A (1900–1969); Algologist
- Miles Tandy, A Life in Translation: Biography and the life of Geoffrey Tandy, MA Thesis