- The Great Cake DisasterMandy Archer
- The Great Coaster ContestTracey West
- The Great DepressionMichael Burgan
- The Great Easter Bunny AdventureEdward Packard
- The Great FallMark Lain
- The Great Puffle SwitchTracey West
- The Great Spy RaceMichael Holt
- The Great Zopper Toothpaste TreasureAmy Brost, Jennifer Bach
- The Green HydraFlint Dille, Gary Gygax
- The Green SlimeSusan Saunders
- The Grimms' Fairy TalesRyan Jacobson
- The Halloween PartyE.A.M. Jakab
- The Hammer of the SunDave Morris
- The Hands of Pablo SantosAllen Sharp
- The Harlem RenaissanceAllison Lassieur
- The Hateful Horrors of the Queen of HeartsSteve Barlow, Steve Skidmore
- The Haunted BabyEdward Packard
- The Haunted CastleNancy Austin, R.G. Austin
- The Haunted Castle of RavencurseLynn Beach
- The Haunted HouseR.A. Montgomery
- The Haunted ManorConnor Hoover
- The Haunted PlanetChristopher Black
- The Haunted PlayhousePhilip Herriot
- The Haunted SanatoriumMatt Doeden
- The Haunted Wagon TrainColin Brake
- The Haunter of the DarkLeandro Pinto
- The Haunters of Marsh HallAllen Sharp
- The Haunting of Spook HouseGeorge Ivanoff
- The Havarine MadnessM.W. Bolton
- The Hawaiian Computer MysteryJanet Chester Bly
- The Hazardous HomesteadKaren Ball
- The Heart of FireMichael J. Ward
- The Heart of HadesLaurie S. Sutton
- The HolidaysJilly Gagnon, Mike MacDonald
- The Honour of the Yorkshire Light ArtilleryGerald Lientz
- The Horror of High RidgeJulius Goodman
- The Horror of Howling HillJonathan Green
- The Hot Dog Gang CaperBonnie Bryant Hiller, Neil W. Hiller
- The House on Hollow HillDanny McAleese, David Kristoph
- The House on Spooky StreetLaurie S. Sutton
- The Houses of the DeadJamie Thomson
- The Hunger of SejanozJoe Dever
- The Hunt for Snufflegrunt's TreasureStewart Cowley
- The Hunting SafariT.J. Matthews
- The Ice DragonFlint Dille, Gary Gygax
- The Iceland WyrmDugald A. Steer, Ernest Drake
- The Iceman's MeltdownJosh Anderson
- The ImposterGraeme Davis
- The Impostor KingH. William Stine, Megan Stine
- The Inch-High KidR.G. Austin
- The Invaders of HarkR.L. Stine
- The Inventor's ApprenticeTracey West
- The Invisibility FactorJosepha Sherman
- The Irish RebellionRichard Brightfield
- The Island of Doctor MoreauKJ Shadmand
- The Island of TimeR.A. Montgomery
- The Isle of TormentDean Moodie
- The Japanese-American InternmentRachael Hanel
- The Joker's DozenLaurie S. Sutton
- The Journey of OdysseusEd DeHoratius