This article contains information about the literary events and publications of 1668.
- c. February – The English Parliament and bishops seek to suppress Thomas Hobbes' treatise Leviathan.
- September 9 – Molière's comedy The Miser (L'Avare) is first performed, at the Théâtre du Palais-Royal (rue Saint-Honoré) in Paris.
- unknown date – Izaak Walton's The Compleat Angler goes into its fourth edition.
- Juan Caramuel – Primus calamus
- Meric Casaubon – Of Credulity and Incredulity
- Josiah Child – Brief Observations concerning Trade and the Interest of Money
- Jean Claude – Réponse au livre de P. Nouet sur l'eucharistie
- Jan Comenius – The Way of Light
- John Dryden – Essay of Dramatick Poesie
- Richard Duckworth and Fabian Stedman – Tintinnalogia, or, the Art of Ringing
- Richard Flecknoe – Sir William Davenant's Voyage to the Other World
- Hans Jakob Christoffel von Grimmelshausen – Simplicius Simplicissimus (first picaresque novel in German, dated 1669 but probably published this year)
- Johannes Hevelius – Cometographia
- Peter Heylin – Cyprianus Anglicanus (biography of William Laud)
- Urban Hjärne – Stratonice (completed)
- Adriaan Koerbagh – Een Bloemhof
- Henry Neville – The Isle of Pines
- William Penn – Truth Exalted
- Francisco Santos – Periquillo el de las gallineras
- John Wilkins – An Essay towards a Real Character and a Philosophical Language
- Roger Boyle, 1st Earl of Orrery
- Tryphon (performed)
- Henry V (published)
- Mustapha (published)
- Margaret Cavendish – Plays, Never Before Printed, Written by the Thrice Noble, Illustrious, and Excellent Princess, the Duchess of Newcastle (closet dramas)
- Sir William Davenant – The Man's the Master (a translation of Paul Scarron's Jodelet, ou le maître valet)
- John Dryden – An Evening's Love
- George Etherege – She Would If She Could
- Sir Robert Howard – The Great Favourite or the Duke of Lerma
- Sir Charles Sedley – The Mulberry-Garden
- Thomas Shadwell – The Sullen Lovers
- Abraham Cowley – Poemata Latina (posthumous)
- Sir John Denham – Poems and Translations
- Jean de La Fontaine – Fables choisies, mises en vers
- Georg Stiernhielm – Musæ Suethizantes
- May 8 – Alain-René Lesage, French novelist and playwright (died 1747)
- September – Joseph Bingham, scholar (died 1723)
- November (baptised) – Thomas Woolston, deist writer (died 1731)
- November 11 – Johann Albert Fabricius (died 1736)
- December 21 – Herman Boerhaave, humanist (died 1738)
- April 7 – Sir William Davenant, poet and playwright (born 1606)
- May 21 – Josephus Adjutus, theologian (born c. 1602)
- August 9 – Jakob Balde, Latinist poet and academic (born 1604)
- November 17 – Joseph Alleine, Nonconformist writer (born 1634)
- December 11 – Marquise-Thérèse de Gorla, actress (born 1633)
- December 22 – Stephen Daye, first American printer (born 1594)
- December 23 – Martin Baučer, Slovene historian (born 1595)
- ^ Uglow, Jenny (2010) . A Gambling Man. London: Faber. p. 443. ISBN 978-0-571-21734-2.
- ^ a b Levi, Anthony (1992). Guide to French Literature: Beginnings to 1789. St. James Press. p. 520. ISBN 978-1-55862-159-6.
- ^ Izaak Walton (1875). The Complete Angler: Or the Contemplative Man's Recreation, Being a Discourse of Rivers, Fish-ponds Fish and Fishing. Chatto and Windus. p. 318.
- ^ Kate Loveman (2008). Reading Fictions, 1660-1740: Deception in English Literary and Political Culture. Ashgate Publishing, Ltd. p. 30. ISBN 978-0-7546-6237-2.
- ^ Bordeaux bibl. municipale (1842). Catalogue des livres. p. 673.
- ^ Grimmelshausen, H. J. Chr. (1669) . Der abentheurliche Simplicissimus [The adventurous Simplicissimus] (in German). Nuremberg: J. Fillion. OCLC 22567416.
- ^ "The Loseley Manuscripts: Records of the More and More Molyneux Family of Loseley Park". The National Archives (United Kingdom). Retrieved February 21, 2013.
- ^ a b "Sweden". The Encyclopedia of Science Fiction. October 8, 2013. Retrieved December 12, 2013.
- ^ Oxford Dictionary of National Biography 7 (2002) pp. 110–111.
- ^ Almut Spalding; Almut Marianne Grützner Spalding (2005). Elise Reimarus (1735-1805). Königshausen & Neumann. p. 518. ISBN 978-3-8260-2813-7.
- ^ Gerrit Arie Lindeboom (1968). Herman Boerhaave: The Man and His Work. Methuen. p. 4. ISBN 978-0-416-10880-4.
- ^ Henry Benjamin Wheatley (1891). London, Past and Present: Its History, Associations, and Traditions. John Murray. p. 112.
- ^ Rudolf Steiner (1975). Between Death and Rebirth: Ten Lectures Given in Berlin Between 5th November, 1912 and 1st April, 1913. Rudolf Steiner Press. p. 69. ISBN 978-0-85440-287-8.
- ^ Henry Merivale Trollope (1905). The Life of Molière. Constable. p. 108.
- ^ Programm und Jahresbericht des K.K. Ober-Gymnasiums in Görz am Schlusse des Schuljahres 1856 (in German). J. B. Seitz. 1856. p. 7.