This is the list of every setting published for D&D (source is 1d4chan);
- Al-Qadim: A supplement to Forgotten Realms, taking place on the same planet. Fantasy medieval Middle East at the height of its wealth, science, and power.
- Birthright: Long ago a bunch of gods died and heroic mortals gained their divine energy. One or more of your PCs is a descendant of those heroes.
- Last supported edition: Advanced Dungeons & Dragons, unofficial porting to 3e taking place at Birthright.net. The 5e Dungeon Master's Guide actually mentioned it as a potential location for adventures and/or planar jaunts, though, which is more than most previous editions gave it, so who knows what the future holds?
- Blackmoor: One of the three original campaign settings, developed by D&D co-creator Dave Arneson. Later retconned into Mystara as a Krull-esque distant past.
- Council of Wyrms: You are the dragons.
- Dark Sun: Dying desert world.
- Last supported edition: Dungeons & Dragons 4th Edition, though most 5e adventure modules discuss what would be needed to port them over to Athas, and the creators have stated they do plan to provide more support in the future.
- Dragon Fist:
If Dragonlance were manlier. D&D set in the world of wuxia folktales from ancient ChinaTlanguo, the land of this setting.
- Dragonlance: One of the more well-known D&D settings, thanks to the many books about it. Twisted D&D standards in a Brighthammer40k sort of way. Home to the kender.
- Last supported edition: Dungeons & Dragons 5th Edition, through a licensing agreement between WoTC and Sovereign Press, though mostly through discussing ways to port stuff over from other books. Unlike Athas, though, Krynn's close enough to Faerun for the conversion to be more comprehensive.
- Eberron: Magitek adventurepunk in a world literally made of dragons.
- Last supported edition: Dungeons & Dragons 5th Edition, though all content is either of the "translation guide in the back of the book" type or strictly WIP/playtest material as of now.
- Forgotten Realms: The most famous and popular setting.
- Ghostwalk: The Monte Cookone everyone forgets exists. The Ethereal Plane meets inverse Ravenloft meets Forgotten Realms, and players can play as ghosts.
- Greyhawk: One of the three original campaign settings, and the default D&D setting for most of its existence. Revered for being the personal setting of Gary Gygax.
- Jakandor: Self-contained setting set on an island divided between magic-loving mage civilization, and magic-hating barbarian horde.
- The Horde: A supplement to Forgotten Realms, taking place on the same planet. Mongols and their related allies and enemies.
- Kara-Tur: A supplement to Forgotten Realms, taking place on the same planet. Ancient fantasy China/Japan with some later material detailing India and Southeast Asia
- Maztica: A supplement to Forgotten Realms, taking place on the same planet. Fantasy post-Columbian America, complete with paladins exterminating and suppressing the believers of native gods.
- Mystara: One of the three original campaign settings, and the first one to be officially published and supported. Partially inspired Greyhawk, it paints a broad picture of the lands around Castle Greyhawk and was designed by David Cook and Tom Moldvay. (Also includes the Hollow World and Red Steelsettings.)
- Planescape: planes, planes everywhere — and we don't mean the flying kind. Established the Great Wheel cosmology. Made famous by the videogame Planescape: Torment
- Pelinore: For all you Britfag grognards out there. Somewhat similar to Ptolus in that it focused on a single city and it's surrounding environs.
- Points of Light: The "default" setting for 4e. An entirely new world completely seperate from any existing D&D cosmology, presented as a predominantly blank slate with various cosmological and historical notes to hold it together before you begin personalizing it.
- Ravenloft: You are evil and being punished in a magic Gothic world that hates you.
Rokugan: blatantly copied by the 3rd Edition Oriental Adventures from Legend of the Five Rings. At least it led to the creation of Mahasarpa, a related setting with a South-East Asia feel.- Spelljammer: D&D IN SPAAACE!
- Last supported edition: Advanced Dungeons & Dragons, but homebrew conversion to Dungeons & Dragons 3rd Edition took place at [1]. Rules for using a Spelljammer ship appear in Dungeons & Dragons 4th Edition Manual of the Planes. The 5e team has discussed it, mentioning that it's a very love-it-or-hate-it setting that makes it a bit of a rough sell, though they have said they want to do at least a little work with it. Got several mentions in Volo's Guide to Monsters, including the reintroduction of the iconic neogi adversaries.
- Tékumel: The vary first setting ever to be published, and by TSR no less. An elaborate fantasy world based on Eastern themes. A whole language was build around it.
- Last supported edition: Original Dungeons & Dragons (Although the game branched off D&D long ago to become its own thing. Its is currently in its fifth edition, under a whole new rule-set.)
- Wilderlands of High Fantasy: based on the earlier single-city setting City State of the Invincible Overlord.
- Kingdoms of Kalamar: Fairly standard D&D type world, although with some notable changes - hobgoblins replacing orcs as the primary hostile humanoids. More known nowadays for becoming the setting for HackMaster.
Beyond Dark Sun, Spelljammer, Ravenloft, Greyhawk, Dragonlance, and Planescape, I don't think many of the others deserve a 5e release.
Maybe Mystara.
