Official Global Websites

Official USA Avatar site - flash
At Nick.com/avatar - Has detailed info on the show, characters, episodes, games, videos, and more.

Official Avatar UK site - flash
At Nick.co.uk - Has games, character info, downloads, and a pretty Asian layout.

Official Avatar Asia site
At Nicksplat.com - Has the same USA flash layout with detailed info, games, and more.

Official Avatar Australia site
At Nickelodeon.com.au - Has show & character info, games, and downloads.

Official Avatar Germany site
At Nick.de - Has character info, episodes in the German dub, tons of downloads, and games.

Official Avatar Italy site
At Nicktv.it - Cool flash layout with info on the show & characters, wallpapers, and more.

Official Avatar Japan Site
At Nickjapan.com - Has show & character info, clips in the Japanese dub, and more in the Asobou/Play section (orange buttons, top left.)

Official Avatar Latin America site
At Mundonick.com - Has show & character info, Wordbending game, and a photo gallery.

Official Avatar Netherlands site
At Nickelodeon.nl - Has show info, videos, games, and a nice flash layout.

Official Avatar Sweden site
At Nickelodeon.se - Has show info, games, video in Swedish dub, a quiz, and more.

Other Sites

The Nickelodeon Shop
Specifically the Avatar: The Last Airbender section. Want merchandise? Check here.

Nickelodeon Magazine - Nicktoon Comics
The official site for Nick mag including online comic scans of Avatar.

Avatar On DVD
The official website for Avatar dvd info, releases, and where to buy.

Avatar: Legends of the Arena
The official global MMO game where players can create their own Avatar characters or play as show favorites and battle against other players.

Official Avatar: The Video Game Site
By THQ; has general info, screenshots, and media for the first Avatar video game.

Official Avatar: The Burning Earth Site
By THQ; has general info, screenshots, and media for the second Avatar video game.

Official Avatar TCG Site
From Upper Deck Entertainment; has all the info you need for the Avatar TCG game, including a demo! Requires Flash to view.

TVShowsonDVD.com
Listing for release info on Avatar DVDs and boxart.

Wikipedia
Their very detailed entry on everything Avatar: The Last Airbender

TV.com's Avatar site
Info on the show, crew and episode guide; & forum.

Animation Insider
A comprehensive review of the Avatar episodes.

ASM: San Diego Comic Con 2005 Coverage
Panel reports & photo galleries for Avatar + more!

Fan sites

Airbender.net
Has graphics, fanwork, screenshots, and more.

Airbender Central
A fansite with bios, art, poems, and more.

Angelic Tempest
Fanart, wallpapers, etc for Avatar and other series.

Avatar Destiny Portal
Show/fandom/movie info, graphics, news, and more.

Avatar Dreams
Avatar world info, lots of graphics, contests, and more.

Avatar Escapade.com
A fansite with news, episodes, wallpapers, and more.

AvAtAr FaNs
Small site with character bios, spoilers, fanworks, & more.

AvatarD: the Last MiSTer
Sporking bad fanfics and sues, one MiST at a time...

Avatar's Moon Spirit
Pretty site with lots of graphics to offer.

The Avatar Portal
Has Avatar news, info, episodes, fanwork, forum, and more.

AvatarSpirit.net
Fansite Giant; has news, screenshots, info, and much more.

Blind Bandit
A fansite to Toph, including adorable sprites!

Blue Spirit Gal
Family friendly site with fanwork, info, and much more.

Crazy About Avatar
Has info, images, icons, & more.

Dazed
Reviews/comments on Avatar fansites and fandom issues.

Dongbu Feng
Fansite Giant; has news, info, podcasts, and more.

Element Shrine
Has info, merchandise listing, polls, and more.

Four Elements
Has tons of graphics and more.

Iroh.org
Has tons of quality screenshots, scans, graphics, and more.

Last Airbender Fans Online
A fansite keeping up-to-date on the Avatar movie news.

Legends of the Avatar
Has general info, and really cute Avatar sprites.

Momo and Aang's home site
Has quotes, icons, contests, & more.

Momoland
A shrine dedicated to Momo!

Oceans Edge
A fansite dedicated to Waterbending!

OfficialAvatar.com
A fansite with info, graphics, fanwork, and more.

Trigger Happy
A quality graphics site, plus fanworks and more!

Waterbender's Haven
Has general info, AMVs, quizes, and more.

Fanlistings

Avatards Unite!
The fanlisting for the Avatar: The Last Airbender tv show

Master of All Four Elements
The fanlisting for Aang

The Katara Fanlisting
The fanlisting for Katara

Underappreciated
The fanlisting for Sokka

Perseverance
The fanlisting for Prince Zuko

Prodigy
The fanlisting for Toph Bei Fong

Fighting Spirit
The fanlisting for Iroh

Flying Lemur
The fanlisting for Momo

Wickedly Beautiful
The fanlisting for Princess Azula

Adamant
The fanlisting for Hakoda

Potential
(My) mini-shrine & fanlisting to Haru

Southern Hospitality
The fanlisting for Jet

Whiplash
The fanlisting for Jun

Fortitude
The fanlisting for Avatar Kyoshi

Gold Herz
The (old) fanlisting for the Kyoshi Warriors

Mannequin
The fanlisting for Mai

Way of the Sword
The fanlisting for Piandao

Point of Impact
The fanlisting for Suki

Aura
The fanlisting for Ty Lee

Burn
The fanlisting for Admiral Zhao

Diversity
The fanlisting for the Animals

Essence
The fanlisting for Earthbender fans

Way of the Flame
The fanlisting for Firebender fans

Pushing Moon
The fanlisting for Waterbender fans

Sea & Sky
The fanlisting for Aang and Katara's relationship

Dancing Dragons
The fanlisting for Aang and Zuko's relationship

Transending Lifetimes
The fanlisting for Aang and Toph's relationship

The Gaang
The fanlisting for Aang, Katara, Sokka, Toph, and Zuko's relationship

The Spirit of Things
The fanlisting for Sokka and Katara's relationship

First Impressions
The fanlisting for Sokka and Suki's relationship

Fun & Games
The fanlisting for Sokka and Toph's relationship

Uncle Iroh and Prince Zuko
The fanlisting for Zuko and Iroh's relationship

Eclipse
The fanlisting for Zuko and Katara's relationship

Crush
The fanlisting for Zuko and Mai's relationship

Trust
The fanlisting for Zuko and Toph's relationship

Sometimes Forever
The fanlisting for Zuko, Azula, Mai, and Ty Lee's relationship

The Prince and the Peasant
The fanlisting for Zuko and Jin's relationship

More than just a game
The fanlisting for Pai Sho

Magnetism
The fanlisting for Zutara fanart

Tra.gic-Tale
The fanlisting for episode 2x02: "The Cave of Two Lovers"

The Headband Fanlisting
The fanlisting for episode 3x02: "The Headband"

Paint That Washes
The fanlisting for episode 3x02: "The Painted Lady"

The Beach Fanlisting
The fanlisting for episode 3x05: "The Beach"

In the Shadows
The fanlisting for episode 3x11: "The Day of Black Sun: The Eclipse"

Communities

Distant Horizon Forum
The official forum for Distant Horizon!

Livejournal: Avatar Fans
A large multi-purpose community for Avatar fans.

Airbender.net Forum
The official forum for Airbender.net!

Avatarfans.net Forum
The forum for Avatarfans.net.

Avatar Portal Forum
The official forum for AvatarPortal.org!

Avatar: The Last Airbender
An Avatar forum with roleplaying.

Avatards United
A general Avatar forum.

Avatardz
An intellectual Avatar discussion forum, plus character name meanings.

Feng Shui
An Avatar RPG forum that doesn't mess around.

Flying Bison
A popular Avatar RPG forum.

Prince Zuko of the Fire Nation
A forum for Zuko fanatics!

Neopets

Avatar:The Last Airbender
A guild for Avatar

Avatar*~The Last Airbender
A guild for Avatar

Avatar, The Last AirBender Guild
A guild for Avatar

Avataropolis
A guild for Avatar

.:Element Bender's:.
A guild for Avatar

Fighting with Fire
A guild for Avatar

Neopian Avatar Fans
A guild for Avatar

The Supreme Alliance
A guild for Avatar

Zuko Shrine
A guild for Zuko fans

Etc

My (old) Guestbook
No longer works, but still linking for the memories. :3 Thank you everyone who signed it!