• The Shadow of SharganElizabeth Caldwell
• The Shadow out of TimeGiny Valrís
• The Shadow over InnsmouthGiny Valrís
• The Shadow PrinceMatt Wayne
• The Shadow StealersR.G. Austin
• The Shadowborn TrialsJoseph Daniels
• The Shadowbound LandsJoe Cheal
• The Shamutanti HillsSteve Jackson
• The Ship at the Edge of TimeDanny McAleese, David Kristoph
• The Sicilian ContractAllen Sharp
• The Siege of the DragonridersEric Affabee
• The Siege of the TowerKem Antilles
• The Silverlake StrangerSally Marcey
• The Sinister Studios of KESP-TVLouise Munro Foley
• The Sinking of the LusitaniaSteven Otfinoski
• The Slippery Schemes of Sushi ManSteve Barlow, Steve Skidmore
• The Smithsonian ConnectionDaryl Lucas
• The Sorcerer's CrownMorris Simon
• The Sorcerer's IsleDave Morris
• The Sorceress and the Book of SpellsAnne E. Schraff
• The SoulforgeTerry Phillips
• The Space PlagueJak Shadow
• The Spaceship GraveyardColin Brake
• The Spell of the Black RavenR.G. Austin
• The Spy MasterJak Shadow
• The Star FlowerGraeme Davis
• The Stone of BaddaAllen Sharp
• The StormAnne E. Schraff
• The Storms of ChaiJoe Dever
• The Story of JuneteenthSteven Otfinoski
• The StowawayGriffin McElroy
• The Strange Physics of the Heidelberg LaboratoryDanny McAleese, David Kristoph
• The Strategy GameCraig Hickman
• The Suicide KingRobert Joseph Levy
• The Suns' Dark ShadowMarc J. Wilson
• The Super Trail Bike RaceRichard Wenk
• The Tall Ship ShakedownNeil S. Wilson
• The Taming of PyreJohn Whitman
• The Tavern on Gallows HillJames A. Hirons
• The Temple of FlameDave Morris, Oliver Johnson
• The Tenth of AvKenneth Roseman
• The Terrible Tricks of Miss TakeSteve Barlow, Steve Skidmore
• The Terrible TrioLaurie S. Sutton
• The Terrible, Horrible, Temp-to-Perm DebacleBob Powers
• The Terror of the Bigfoot BeastLaurie S. Sutton
• The Terrorist TrapShannon Gilligan
• The Thing on the DoorstepLeandro Pinto
• The Thing: One Thing After AnotherWarren Spector
• The Third Planet from AltairEdward Packard
• The Three BearsKevin Scally
• The Three Investigators in: The Case of the Dancing DinosaurRose Estes
• The Three Investigators in: The Case of the House of HorrorsH. William Stine, Megan Stine
• The Three Investigators in: The Case of the Savage StatueM.V. Carey
• The Three Investigators in: The Case of the Weeping CoffinH. William Stine, Megan Stine
• The Three WishesShannon Gilligan
• The Throne of ZeusDeborah Lerme Goodman
• The Thundercats and the Ghost WarriorH. William Stine, Megan Stine
• The Thundercats and the Snowmen of Hook MountainH. William Stine, Megan Stine
• The Tides of InnsmouthJonathan Green
• The Time CrocodileColin Brake