- King Henry VIIIAuthor: William ShakespeareReleased on Project Gutenberg: December 1, 1997
- King Henry VIIIAuthor: William ShakespeareReleased on Project Gutenberg: November 1, 1998
- King Henry VIIIAuthor: William ShakespeareReleased on Project Gutenberg: July 1, 1999
- King Henry VIIIAuthor: William ShakespeareReleased on Project Gutenberg: July 1, 2000
- King JohnAuthor: William ShakespeareReleased on Project Gutenberg: November 1, 1997
- King JohnAuthor: William ShakespeareReleased on Project Gutenberg: October 1, 1998
- King JohnAuthor: William ShakespeareReleased on Project Gutenberg: June 1, 1999
- King JohnAuthor: William ShakespeareReleased on Project Gutenberg: July 1, 2000
- King John of Jingalo: The Story of a Monarch in DifficultiesAuthor: Laurence HousmanReleased on Project Gutenberg: June 4, 2006
- King LearAuthor: William ShakespeareReleased on Project Gutenberg: December 1, 1997
- King LearAuthor: William ShakespeareReleased on Project Gutenberg: November 1, 1998
- King LearAuthor: William ShakespeareReleased on Project Gutenberg: June 1, 1999
- King LearAuthor: William ShakespeareReleased on Project Gutenberg: July 1, 2000
- King Midas: a RomanceAuthor: Upton SinclairReleased on Project Gutenberg: January 1, 2004
- King o' the Beach: A Tropic TaleAuthor: George Manville Fenn, Greene, J. B. [Illustrator]Released on Project Gutenberg: May 4, 2007
- King of the Jews: A story of Christ's last days on EarthAuthor: W. T. (William Thomas) SteadReleased on Project Gutenberg: September 23, 2007
- King Olaf's Kinsman: A Story of the Last Saxon Struggle against the Danes in the Days of Ironside and CnutAuthor: Charles W. (Charles Watts) WhistlerReleased on Project Gutenberg: July 3, 2005
- King Richard IIAuthor: William ShakespeareReleased on Project Gutenberg: November 1, 1997
- King Richard IIAuthor: William ShakespeareReleased on Project Gutenberg: October 1, 1998
- King Richard IIAuthor: William ShakespeareReleased on Project Gutenberg: June 1, 1999
- King Richard IIAuthor: William ShakespeareReleased on Project Gutenberg: July 1, 2000
- King Richard IIIAuthor: William ShakespeareReleased on Project Gutenberg: November 1, 1997
- King Richard IIIAuthor: William ShakespeareReleased on Project Gutenberg: October 1, 1998
- King Richard IIIAuthor: William ShakespeareReleased on Project Gutenberg: June 1, 1999
- King Richard IIIAuthor: William ShakespeareReleased on Project Gutenberg: July 1, 2000
- King Solomon's MinesAuthor: H. Rider (Henry Rider) HaggardReleased on Project Gutenberg: May 1, 2000
- King WinterAuthor: AnonymousReleased on Project Gutenberg: February 13, 2006
- King's Cutters and Smugglers 1700-1855Author: E. Keble (Edward Keble) ChattertonReleased on Project Gutenberg: January 21, 2006
- King--of the Khyber Rifles: A Romance of AdventureAuthor: Talbot MundyReleased on Project Gutenberg: July 1, 2004
- Kings, Queens and Pawns: An American Woman at the FrontAuthor: Mary Roberts RinehartReleased on Project Gutenberg: December 25, 2004
- Kinship Organisations and Group Marriage in AustraliaAuthor: Northcote Whitridge ThomasReleased on Project Gutenberg: December 28, 2005
- Kinston, Whitehall and Goldsboro (North Carolina) expedition, December, 1862Author: Howe, W. W. [Editor]Released on Project Gutenberg: February 6, 2008
- Kit of Greenacre FarmAuthor: Izola L. (Izola Louise) ForresterReleased on Project Gutenberg: February 12, 2005
- Kitchener's Mob: Adventures of an American in the British ArmyAuthor: James Norman HallReleased on Project Gutenberg: October 29, 2006
- Kitty Canary: A NovelAuthor: Kate Langley BosherReleased on Project Gutenberg: October 25, 2005
- Kitty TrenireAuthor: Mabel Quiller-CouchReleased on Project Gutenberg: November 9, 2004
- Kitty's Class Day and Other StoriesAuthor: Louisa May AlcottReleased on Project Gutenberg: December 1, 2003
- Klondike Nuggets, and How Two Boys Secured ThemAuthor: Edward Sylvester Ellis, Orson LowellReleased on Project Gutenberg: June 1, 2007
- Klondyke Nuggets: A Brief Description of the Great Gold Regions in the NorthwestAuthor: Joseph LadueReleased on Project Gutenberg: November 1, 2003
- Knickerbocker's History of New York, CompleteAuthor: Washington IrvingReleased on Project Gutenberg: July 29, 2004
- Knights of Art: Stories of the Italian PaintersAuthor: Steedman, AmyReleased on Project Gutenberg: May 1, 1996
- Knights of Malta, 1523-1798Author: Reuben CohenReleased on Project Gutenberg: April 1, 2004
- Knock, Knock, Knock and Other StoriesAuthor: Ivan Sergeevich Turgenev, Constance GarnettReleased on Project Gutenberg: December 1, 2004
- Knocking the NeighborsAuthor: George AdeReleased on Project Gutenberg: November 16, 2006
- Knots, Splices and Rope Work: A Practical Treatise Giving Complete and Simple Directions for Making All the Most Useful and Ornamental Knots in Common Use, with Chapters on Splicing, Pointing, Seizing, Serving, etc.Author: A. Hyatt (Alpheus Hyatt) VerrillReleased on Project Gutenberg: September 21, 2004
- Kokoro: Hints and Echoes of Japanese Inner LifeAuthor: Lafcadio HearnReleased on Project Gutenberg: September 1, 2005
- Korea's Fight for FreedomAuthor: Fred A. (Fred Arthur) McKenzieReleased on Project Gutenberg: September 3, 2004
- Korean—English DictionaryAuthor: Kuperman, LeonReleased on Project Gutenberg: May 1, 2004
- KrindlesykeAuthor: Wilfrid Wilson GibsonReleased on Project Gutenberg: July 3, 2006
- Kwaidan: Stories and Studies of Strange ThingsAuthor: Lafcadio HearnReleased on Project Gutenberg: February 1, 1998
- L'Abbe Constantin — CompleteAuthor: Ludovic HalévyReleased on Project Gutenberg: October 30, 2004
- L'Abbe Constantin — Volume 1Author: Ludovic HalévyReleased on Project Gutenberg: April 1, 2003
- L'Abbe Constantin — Volume 2Author: Ludovic HalévyReleased on Project Gutenberg: April 1, 2003
- L'Abbe Constantin — Volume 3Author: Ludovic HalévyReleased on Project Gutenberg: April 1, 2003
- L'Allegro, Il Penseroso, Comus, and LycidasAuthor: John MiltonReleased on Project Gutenberg: January 1, 1996
- L'AssommoirAuthor: Émile ZolaReleased on Project Gutenberg: July 1, 2005
- L'AssommoirAuthor: Émile ZolaReleased on Project Gutenberg: April 27, 2006
- L. Annaeus Seneca on BenefitsAuthor: Seneca, Lucius Annaeus, 5? BCE-65, Aubrey StewartReleased on Project Gutenberg: February 1, 2003
- L.P.M. : The End of the Great WarAuthor: J. Stewart (John Stewart) BarneyReleased on Project Gutenberg: April 1, 2005
- La Chanson de Roland : Translated from the Seventh Edition of Léon GautierAuthor: Léonce RabillonReleased on Project Gutenberg: December 11, 2007