| George Green | Brilliant self-taught mathematician, whose theories, especially 'Green's functions', have become valued this century. |
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| Robert Willis |
 | An important figure in the early teaching of engineering at Cambridge, lecturing in Mechanics and Structures, he applied his knowledge in his spare time to the study of medieval architecture. All this while holding a post originally intended for the discovery of a cure for gout! |
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| C.F. Mackenzie |
 | First bishop of the Mission to Central Africa, inspired by Livingstone. He was still a Fellow of the college at his death of fever by the Zambesi. |
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| Sir John Seeley |
 | Historian, most famous for applying history as a practical science in understanding current events. The University History Library is named after him. |
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| John Venn |
 | Philosopher and mathematician, a pioneer of logic and probability theory. Now best known for inventing 'Venn Diagrams' as a representation of probabilities. A stained glass window to his memory stands in Caius Hall. Also the compiler of the first three volumes of the Biographical History of Caius, and with his son, of the first part of Alumni Cantabrigienses. |
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Henry Bickersteth, Lord Langdale
(1783-1851) | Whig lawyer who as Master of the Rolls oversaw the creation of the Public Records Office As a Fellow of the College, Bickersteth challenged the administration of the Perse Trust in 1825, and repaid the Bursar the precise amount, £748. 15s. he reckoned he had been overpaid under its terms. |