Sir Geoffrey Langdon KEYNES (/ˈkeɪnz/; 25a de Marto 1887, Kembriĝo – 5a de Julio 1982, Kembriĝo) estis angla ĥirurgo, internisto kaj verkisto.[1] Li ekkarieris kiel kuracisto en la Unua Mondmilito, antaŭ iĝi doktoro en la Hospitalo Sankta Bartolomeo en Londono, kie li faris elstarajn plinovigojn en la fakoj de sangotransfuzo kaj kirurgio kontraŭ mamkancero. Keynes estis ankaŭ fakula verkisto kaj bibliografo pri Angla literaturo kaj medicina historio de Anglio, fokuse ĉefe al William Blake kaj William Harvey.
- A Bibliography of Dr. John Donne (1914, 1932, 1958, 1973)
- A Bibliography of William Blake (The Grolier Club, New York, 1921)
- Blood Transfusion (H. Frowde, London, 1922)
- A Bibliography of Sir Thomas Browne (Cambridge, 1924, 1968)
- William Pickering, Publisher: A Memoir and a Hand-List of his Editions (The Fleuron, 1924)
- Jane Austen: a Bibliography (Nonesuch Press, 1929)
- Selected Essays of William Hazlitt 1778 : 1830 (Nonesuch Press, 1930)
- The Works of Sir Thomas Browne (Faber & Gwyer / Faber & Faber 1928-1931 [6 volumoj], 1964 [4 volumoj])
- The Note-Book of William Blake (Nonesuch Press, 1935)
- John Evelyn: a Study in Bibliophily & a Bibliography of his Writings (Cambridge, 1937)
- The Faber Gallery Series: Blake (Faber and Faber, 1945)
- The Poetical Works of Rupert Brooke (Faber & Faber, 1946)
- William Blake, 1757–1827 (1947)
- Poetry and Prose of William Blake (Nonesuch Press, 1948)
- The Portraiture of William Harvey (The Thomas Vicary Lecture 1948, Royal College of Surgeons, 1949)
- The Personality of William Harvey (Cambridge University Press: 1949)
- William Blake's Engravings, eldonita kun enkonduko (Faber and Faber, (1950)
- The Tempera Paintings of William Blake (1951)
- The Apologie and Treatise of Ambroise Containing the Voyages Made into Divers Places with Many of His Writings Upon Surgery (1951)
- Samuel Butler's Note-Books, elektaĵoj (1951) kun Brian Hill
- Poems of Rupert Brooke (1954)
- A Bibliography of Rupert Brooke (The Soho Bibliographies, No.4, Rupert Hart-Davis, 1954)
- The Letters of William Blake (Rupert Hart-Davis, 1956, 1968)
- Harvey Though John Aubrey's Eyes (1958)
- A Bibliography of Dr. Robert Hooke (1960)
- Essays in Biography 1961 de J. M. Keynes, eldonisto
- Dr. Timothie Bright 1550—1615. A Survey of his Life with a Bibliography of his Writings (1962)
- A Study of the Illuminated Books of William Blake: Poet, Printer, Prophet (1964)
- An Exhibition of the Illuminated Books of William Blake: Poet – Printer – Prophet (1964) kun Lessing J. Rosenwald
- On Editing Blake (1964)
- Blake. The Masters 6 (1965)
- Blake: Complete Writings with Variant Readings, eldonisto, Oxford University Press, 1966 (UK-Paperback, Revised). (ISBN 0192810502)
- William Blake. Songs of Innocence and of Experience, eldonisto, kun Introduction kaj Commentary. London: Oxford University Press (1967)
- Henry James in Cambridge (1967)
- Sir Thomas Browne, Selected Writings (1968)
- The Letters of Rupert Brooke (1968)
- William Blake Engraver (1969)
- William Pickering, Publisher: A Memoir and a Check-List of his Publications (London, Galahad Press, 1969; New York, Burt Franklin, 1969)
- Drawings of William Blake: 92 Pencil Studies. Selection, Introduction and Commentary, Dover Publications, Inc., New York, 1970 (ISBN 0-486-22303-5)
- A Bibliography of Sir William Petty F.R.S. and of 'Observations on the Bills of Mortality' by John Graunt F.R.S. Oxford : Clarendon Press (1971)[2]
- William Blake's Water-Colours Illustrating the Poems of Thomas Gray (1972)
- Deaths Duell by John Donne (Godine, 1973)
- The Marriage of Heaven and Hell (Oxford University Press, 1975)
- A Bibliography of Henry King D.D., Bishop of Chichester (Douglas Cleverdon, 1977)
- The Gates of Memory (1981) Keynes, Geoffrey and Davidson, Peter (Eds.)
- A Watch of Nightingales (Stourton Press, 1981)
- Geoffrey Keynes: The gates of memory. Oxford : Oxford University Press; ISBN 0-19-812657-3
- To Geoffrey Keynes: Articles from the "Book Collector" to Commemorate His Eighty-Fifth Birthday (The Book Collector, 1972, ISBN 0903482002) kun Francis Meynell, A. N. L. Munby, David Garnett, John Sparrow