- AD&D Adventures in Space
- Aartuk
- Aartukia
- Abbathor
- Aelivere
- Aerdrie Faenya
- Air dragon
- Alabeth
- Albari
- Alchemy plant
- Allen Varney
- Allura
- Amaimon
- Amaunator's belt
- Anadia
- Anadian halfling
- Anadjiin
- Ancient mariner
- Angela Lokotz
- Angelika Lokotz
- Angelship
- Anne Brown
- Antennae of triangulation
- Antlership
- Arcane
- Arcane Inner Flow
- Arcane Outer Flow
- Argos
- Argosy
- Arhoad
- Armada
- Armistice
- Arvoreen
- Ashspace
- Astereater
- Asteroid
- Asteroid belt (Greatspace)
- Asteroid spider
- Astromundi Cluster
- Astromundi Cluster, The
- Astrosphinx
- Asylum
- Athas
- Atropus
- Auril
- Autognome
- Azer
- Azuth
- Baervan Wildwanderer
- Ballista
- Bane
- Barbuda
- Barge of Ptah
- Batship, The
- Battle Cry
- Battle of Kule
- Battlewagon
- Beholder
- Beholder-kin
- Berronar
- Beshaba
- Beyond the Moons
- Beyond the Moons/Index
- Bionoid
- Black Clouds, The
- Blackjammer
- Blackjammer's Cutlass
- Blade
- Blazozoid
- Bloatfly
- Blood red sun (Herospace)
- Bloodjack
- Bloodsac
- Blunt ram
- Boccob
- Bodi
- Bombard
- Boran
- Borden
- Borka
- Bosk giant
- Bracers of invulnerability
- Brain golem
- Branchala
- Branchala (deity)
- Brandobaris
- Broken Sphere, The
- Broken Sphere, The/Index
- Brom
- Bruin Shambrath
- Bugbear
- Burbur
- Burnayette Skyansdanya
- Buzzjewel
- CGR1 The Complete Spacefarer's Handbook
- Caer Windlauer
- Calia Thornbow
- Caravel
- Cargo Barge
- Cartography
- Catapult
- Caz-Adar
- Celestial body
- Celestian
- Centaur
- Chalice of continual water
- Chandos
- Chandos fish
- Chaostromme
- Charon
- Chattur
- Chauntea
- Chemosh
- Chemosh (deity)
- Chiros Pellinore
- Chislev
- Chislev (deity)
- Citadel
- Clanggedin Silverbeard
- Clipper
- Cloakmaster Cycle, The
- Clockwork horror
- Clouds of Freezing Vapor
- Coaster
- Cog
- Coliar
- Colonial grell
- Color Spray Nebula
- Colossus
- Comet K'Thoutek
- Comet steed
- Comporellon
- Conatha
- Cones of communication
- Conflagrator
- Constellate
- Contemplator
- Crown of Corellon
- Crypt servant
- Crystal Ship
- Crystal sphere
- Cumberland
- Current events
- Cuttle Command
- Cyric
- Cyrrollalee
- DM Guide
- Dale "Slade" Henson
- Damselfly
- Dark Pharaoh
- Dark Region
- Dark blue sun (Herospace)
- Dark green sun (Herospace)
- Darkseed
- DeGleash plasmoid
- Deathglory
- Deathspider
- Decapitator
- Defenestrator
- DelNoric plasmoid
- Dell Barras
- Delphinid
- Deneir
- Devastator
- Devolution
- Diesel
- Directions
- Dizantar
- Dohwar
- Dolphin
- Doombat
- Dori Watry
- Dracon
- Dragon
- Dragon Claw
- Dragon Rock
- Dragon of Dawn
- Dragonfly
- Dragonship
- Drakkar
- Dreadnought
- Dreamslayer
- Dromond
- Drow
- Dukagsh
- Dumathoin
- Dwarf
- Dweomerborn
- Ed Greenwood
- Edill
- Eel Ship
- Ehlonna
- Eldath
- Elemental
- Elf
- Elmarin
- Elmarin cannon call
- Elsun
- Elysak
- Ephemeral
- Epistle of Lord JaykEl of the Blue Order of the Spelljammer, The
- Erevan Ilesere
- Eric Severson
- Esthetic
- Eviscerator
- Faeriespace
- Fal
- Falx
- Far Star
- Feesu
- Fharlanghn
- Firbolg (constellation)
- Firebird
- Firelich
- First Helm
- Flame swallow
- Flandal Steelskin
- Flitter
- Flowfiend
- Flying Pyramid
- Focoid
- Fractine
- Furnace golem
- Gadabout
- Galleon
- Galleon Nebula
- Gammaroid
- Garden
- Gargantuan praying mantis
- Garrash
- Gary L. Thomas
- Gaye O'Keefe
- Ge'Neva
- Genie
- Geonomicon, The
- Ghoul
- Giant space hamster
- Giff
- Gilean
- Gilean (deity)
- Ginsel
- Glass of distant vision
- Glyth
- Gnibile
- Gnoll
- Gnome
- Gnomewrecker
- Goblin
- Golden Dory
- Gond
- Gondorin
- Gonn
- Gorath Shambrath
- Gossamer
- Grappling ram
- Grav
- Gravislayer
- Gray sun (Herospace)
- Great Bombard
- Great Dreamer
- Great Father
- Great Galley
- Greater mummy
- Greatspace
- Greatswan
- Greek fire projector
- Greela
- Grell
- Greyspace
- Grinder, The
- Grommam
- Groundling
- Gullion
- Gyre
- H'Catha
- Habbakuk
- Habbakuk (deity)
- Hackjammer
- Hadozee
- Half-elf
- Half-ogre
- Halfling
- Hammership
- Hanali Celanil
- Harp
- Haven
- Heathguard
- Hecht
- Hel
- Helian
- Helm
- Helmsman's Companion, The
- Helot
- Herospace
- Heucuva
- Hiddukel
- Hiddukel (deity)
- Hobgoblin
- Holbag
- Horg
- Horn of voices
- Hub-El
- Human
- Hummingbird
- Hunter-Killer
- I
- Ignia
- Illithid
- Ilmater
- Imbul
- Incabulos
- Infinity vine
- Insectare
- Intellect devourer
- Into the Void
- Into the Void/Index
- Invisible sails
- Isopterite
- Istus
- Iuz
- Jammer leech
- Jean Rabe
- Jeff Easley
- Jeff Grubb
- Jennell Jaquays
- Jettison
- Jim Holloway
- Jim Lowder
- Jim Ward
- Jon Pickens
- Jonatha Ariadne Caspian
- K'r'r'r
- Ka'jk'z
- Ka'jk'zxl
- Kara-Tur
- Karen S. Boomgarden
- Karpri
- Karrington
- Kasharin
- Keriacus
- Kil'lix
- Kim Mohan
- Kindori
- Kiri-Jolith
- Kiri-Jolith (deity)
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