Dungeons & Dragons had always been replete with campaign settings, both those officially released and those created by DMs themselves. From the grim and dark world of Ravenloft, to the noble and chivalrous Dragonlance, they span all manner of interests and themes in order to provide as broad an attraction to players and DMs of all strips.
 List of D&D Campaign Settings
- 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: The gods fucked a lot of mortals, and one or more of your PCs is a descendant of one.
- 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.
- Dragon Fist:
If Dragonlance were manlier. D&D set in the world of wuxia folktales from ancient China Tlanguo, 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.
- Eberron: Magitek adventurepunk in a world literally made of dragons.
- Ghostwalk: The one 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.
- 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. Basically a completely blank canvas with no flavor other than "We're shitting up planar cosmology, deal with it."
- Ravenloft: You are evil and being punished in a magic Gothic world that hates you.
 Noteworthy/developed 'homebrew' settings