- The Jacket (The Star-Rover)Author: Jack LondonReleased on Project Gutenberg: January 1, 1998
- The Jacobite Rebellions (1689-1746): (Bell's Scottish History Source Books.)Author: J. Pringle (James Pringle) ThomsonReleased on Project Gutenberg: November 15, 2007
- The JamesonsAuthor: Mary Eleanor Wilkins FreemanReleased on Project Gutenberg: February 19, 2006
- The Japanese TwinsAuthor: Lucy Fitch PerkinsReleased on Project Gutenberg: October 1, 2002
- The Jargon File, Version 2.9.10, 01 Jul 1992Author: Eric S. Raymond, Guy L. SteeleReleased on Project Gutenberg: August 1, 1992
- The Jargon File, Version 4.0.0, 24 Jul 1996Author: Eric S. Raymond, Guy L. SteeleReleased on Project Gutenberg: February 1, 1997
- The Jargon File, Version 4.2.2, 20 Aug 2000Author: Eric S. Raymond, Guy L. SteeleReleased on Project Gutenberg: January 1, 2002
- The Jealousies of a Country TownAuthor: Honoré de Balzac, George Saintsbury, Ellen Marriage, Katharine Prescott WormeleyReleased on Project Gutenberg: April 1, 2005
- The Jefferson-Lemen Compact: The Relations of Thomas Jefferson and James Lemen in the Exclusion of Slavery from Illinois and Northern Territory with Related Documents 1781-1818Author: Willard C. (Willard Carey) MacNaulReleased on Project Gutenberg: April 29, 2007
- The Jericho RoadAuthor: W. Bion (Walter Bion) AdkinsReleased on Project Gutenberg: October 20, 2004
- The Jerusalem Sinner Saved; or, Good News for the Vilest of MenAuthor: John BunyanReleased on Project Gutenberg: June 1, 2002
- The Jervaise ComedyAuthor: J. D. (John Davys) BeresfordReleased on Project Gutenberg: February 20, 2005
- The Jest Book: The Choicest Anecdotes and SayingsAuthor: Mark LemonReleased on Project Gutenberg: January 13, 2007
- The Jester of St. Timothy'sAuthor: Arthur Stanwood PierReleased on Project Gutenberg: January 16, 2006
- The Jesuit Missions : A Chronicle of the Cross in the WildernessAuthor: Thomas Guthrie Marquis, H. H. (Hugh Hornby) Langton, George McKinnon WrongReleased on Project Gutenberg: August 1, 2003
- The Jesus of HistoryAuthor: T. R. (Terrot Reaveley) GloverReleased on Project Gutenberg: August 31, 2004
- The Jew and American IdealsAuthor: John SpargoReleased on Project Gutenberg: June 15, 2007
- The Jew and Other StoriesAuthor: Ivan Sergeevich Turgenev, Constance GarnettReleased on Project Gutenberg: August 1, 2005
- The Jew of MaltaAuthor: Christopher MarloweReleased on Project Gutenberg: May 1, 1997
- The Jewel CityAuthor: Ben MacomberReleased on Project Gutenberg: January 1, 2005
- The Jewel Merchants: A Comedy in One ActAuthor: James Branch CabellReleased on Project Gutenberg: February 1, 2006
- The Jewel of Seven StarsAuthor: Bram StokerReleased on Project Gutenberg: February 1, 2003
- The Jewish Manual: Practical Information in Jewish and Modern Cookery with a Collection of Valuable Recipes & Hints Relating to the ToiletteAuthor: Montefiore, Judith Cohen, LadyReleased on Project Gutenberg: May 1, 2004
- The Jewish StateAuthor: Theodor Herzl, Alex Bein, Louis LipskyReleased on Project Gutenberg: May 2, 2008
- The Jimmyjohn Boss, and Other StoriesAuthor: Owen WisterReleased on Project Gutenberg: July 1, 1998
- The Jingle BookAuthor: Carolyn Wells, Oliver HerfordReleased on Project Gutenberg: February 9, 2008
- The Job: An American NovelAuthor: Sinclair LewisReleased on Project Gutenberg: May 15, 2008
- The Jolliest School of AllAuthor: Angela BrazilReleased on Project Gutenberg: December 22, 2006
- The Jolly CornerAuthor: Henry JamesReleased on Project Gutenberg: February 1, 1998
- The Journal of a Mission to the Interior of Africa, in the Year 1805: Together with Other Documents, Official and Private, Relating to the Same Mission, to Which Is Prefixed an Account of the Life of Mr. ParkAuthor: Mungo Park, Whishaw, J. (John)Released on Project Gutenberg: September 1, 2005
- The Journal of a Tour to the Hebrides with Samuel Johnson, LL.D.Author: James BoswellReleased on Project Gutenberg: July 1, 2004
- The Journal of a Voyage to LisbonAuthor: Henry FieldingReleased on Project Gutenberg: December 1, 1997
- The Journal of Abnormal Psychology, Volume 10Author: VariousReleased on Project Gutenberg: March 1, 1998
- The Journal of Arthur Stirling : ("The Valley of the Shadow")Author: Upton SinclairReleased on Project Gutenberg: March 1, 2005
- The Journal of Negro History, Volume 1, January 1916Author: VariousReleased on Project Gutenberg: October 5, 2004
- The Journal of Negro History, Volume 2, 1917Author: VariousReleased on Project Gutenberg: March 6, 2007
- The Journal of Negro History, Volume 3, 1918Author: VariousReleased on Project Gutenberg: March 26, 2007
- The Journal of Negro History, Volume 4, 1919Author: VariousReleased on Project Gutenberg: April 15, 2007
- The Journal of Negro History, Volume 5, 1920Author: VariousReleased on Project Gutenberg: October 26, 2007
- The Journal of Negro History, Volume 6, 1921Author: VariousReleased on Project Gutenberg: July 26, 2007
- The Journal of Negro History, Volume 7, 1922Author: VariousReleased on Project Gutenberg: February 1, 2008
- The Journal of Sir Walter Scott: From the Original Manuscript at AbbotsfordAuthor: Walter Scott, David DouglasReleased on Project Gutenberg: February 1, 2005
- The Journal to StellaAuthor: Jonathan Swift, George Atherton AitkenReleased on Project Gutenberg: July 1, 2003
- The Journals of Lewis and Clark, 1804-1806Author: Meriwether Lewis, William ClarkReleased on Project Gutenberg: July 1, 2005
- The Journey to the Polar SeaAuthor: John Franklin, Robert Falcon ScottReleased on Project Gutenberg: September 24, 2004
- The Joyful HeartAuthor: Robert Haven SchaufflerReleased on Project Gutenberg: November 2, 2006
- The Joyous Adventures of Aristide PujolAuthor: William John Locke, Ball, Alec [Illustrator]Released on Project Gutenberg: July 31, 2008
- The Jubilee of the Constitution: Delivered at New York, April 30, 1839, Before the New York Historical SocietyAuthor: John Quincy AdamsReleased on Project Gutenberg: April 1, 1997
- The Judas ValleyAuthor: Randall Garrett, Robert SilverbergReleased on Project Gutenberg: June 7, 2008
- The JudgeAuthor: Rebecca WestReleased on Project Gutenberg: June 24, 2005
- The Judgment HouseAuthor: Gilbert ParkerReleased on Project Gutenberg: February 1, 2003
- The Judgment of EveAuthor: May Sinclair, John Wolcott AdamsReleased on Project Gutenberg: October 29, 2006
- The JungleAuthor: Upton SinclairReleased on Project Gutenberg: March 11, 2006
- The Jungle BabyAuthor: G. E. (George Edward) FarrowReleased on Project Gutenberg: February 26, 2007
- The Jungle BookAuthor: Rudyard KiplingReleased on Project Gutenberg: January 16, 2006
- The Jungle Fugitives: A Tale of Life and Adventure in India: Including also Many Stories of American Adventure, Enterprise and DaringAuthor: Edward Sylvester EllisReleased on Project Gutenberg: October 6, 2005
- The Jungle GirlAuthor: Gordon CasserlyReleased on Project Gutenberg: November 18, 2004
- The Junior Classics, Volume 1: Fairy and wonder talesAuthor: William Patten, Charles William Eliot, William Allan NeilsonReleased on Project Gutenberg: April 1, 2002
- The Junior Classics, Volume 4: Heroes and heroines of chivalryAuthor: William PattenReleased on Project Gutenberg: August 1, 2004
- The Junior Classics, Volume 5: Stories that never grow oldAuthor: William PattenReleased on Project Gutenberg: August 1, 2004