John Willis Clark (1833 – 1910), sometimes J. W. Clark, was an English academic and antiquarian.
Clark was born into a Cambridge University academic family, and was a nephew of Prof. Robert Willis. Educated at Eton and Trinity College, Cambridge, he spent his life at the university, serving as Fellow of Trinity, Superintendent of the Cambridge University Museum of Zoology from 1866-1892, and Registrary of the University. He was also Secretary of the Cambridge Antiquarian Society. He is buried in the Mill Road cemetery, Cambridge.
His son was Sir William Henry Clark.Architectural History of the University and Colleges of Cambridge, with Robert Willis, 4 volumes, 1886.
The Life and Letters of The Reverend Adam Sedgwick (1890) in 2 volumes
Libraries in the Medieval and Renaissance Periods (1894)
The observances in use at The Augustinian Priory of S. Giles : and S. Andrew at Barnwell, Cambridgeshire (1897)
On the Vatican Library of Sixtus IV (1899])
A descriptive catalogue of the manuscripts in the library of Peterhouse (1899)
Old friends at Cambridge and elsewhere (1900)
The Care of Books (1901)
Cambridge; a concise guide to the town & university in an introduction and four walks (2nd edition, 1902); (1st edition, 1898)
Endowments of the University of Cambridge (1904)
John Dawson (surgeon) (1734-1820)
Henry Richards Luard
John Montagu (Trinity) (1655?-1728)
George Peacock (1791-1858)
George Phillips (canon lawyer) (1804-1892)
William Hepworth Thompson
Robert Willis (engineer) (1800-1875)
Francis John Hyde Wollaston
Christopher Wordsworth (1774-1846)
"John Willis Clark", The Times, 1910,
Obituary: Mr. John Willis Clark