Nicolas John Barker OBE FBA FSA (born 1932) is a British historian of printing and books.^[2][3] He was Head of Conservation at the British Library from 1976 to 1992 and is a former editor of The Book Collector.^[4]

A bibliography of his work was published to mark his 80th birthday in 2012.^[5] He was elected a Fellow of the British Academy in 1998, and is also a Fellow of the Society of Antiquaries of London; in 2002, he was appointed an Officer of the Order of the British Empire.^[6][7]

• Barker, Nicolas (1972). Stanley Morison. London: Macmillan.
• Barker, Nicolas (1978). Bibliotheca Lindesiana: the Lives and Collections of Alexander William, 25th Earl of Crawford and 8th Earl of Balcarres, and James Ludovic, 26th Earl of Crawford and 9th Earl of Balcarres. London: for Presentation to the Roxburghe Club, and published by Bernard Quaritch
• Barker, Nicolas (1987). The Butterfly Books. An Enquiry into the Nature of Certain Twentieth Century Pamphlets. London: Bertram Rota.
• Barker, Nicolas (1988). Two East Anglian Picture Books.
• Barker, Nicolas (1989) Treasures of the British Library; compiled by Nicolas Barker and the curatorial staff of the British Library. New York: Harry N. Abrams ISBN 0-8109-1653-3
• Barker, Nicolas (2000). The Great Book of Thomas Trevilian.
• Barker, Nicolas (2003). Form and Meaning in the History of the Book. Selected Essays by Nicolas Barker. London: British Library.
• John Carter; Nicolas Barker (2004). ABC for Book Collectors (8th ed.). ISBN 1584561122.
• Barker, Nicolas (2020). Reginald Heber: A Letter from India.