The M.A.J.O.R.
- The website of The Magnificent Alliance of Joe Obsessed Revolutionaries (The M.A.J.O.R.), an unofficial fan group for the actor Joe Flanigan, currently starring as Lt.Colonel John Sheppard in the TV series Stargate Atlantis.
- http://www.newmajor.net/

GateShip-One.net
- A french website dedicated to Stargate Atlantis.
- http://www.gateship-one.net

Atlantis SGC
- Provides news, air schedules, and message boards and chatroom.
- http://www.atlantissgc.org

TV.com: Stargate Atlantis
- Provides news, episode guides, and cast and crew information.
- http://www.tv.com/stargate-atlantis/show/11415/summary.html

Atlantica
- Provides information, images, screen captures, downloads, fanfics and message forum.
- http://sg-atlantis.org/

Pegasus Galaxy
- Stargate Atlantis news, downloads, forums, fan fiction, and multimedia.
- http://www.pegasusgalaxy.com

Stargate Atlantis
- Official site from SciFi Channel. Includes character and cast information, news, episode guides, and photos. [Requires Flash for some content]
- http://www.scifi.com/atlantis

IMDb: Stargate: Atlantis
- Cast, crew, and production information, as well as viewer comments.
- http://www.imdb.com/title/tt0374455/