This section lists characters who appear and/or are mentioned in Stargate Atlantis. It is currently still under construction, both in terms of listing of names and in profiles. You can also view characters by group, planet, or origin.

• Abrams (Dr.)
• Ager (Dr.)
• Allina
• Aries
• Avrid

• Baldric
• Barrett, Malcom (Agent)
• Bates (Sgt.)
• Beckett, Carson (Dr.)
• Billick
• Biro (Dr.)
• Bob the Wraith
• Brown, Katie (Dr.)
• Bryce (Dr.)

• Cadman, Laura (Lt.)
• Caldwell, Steven (Col.)
• Callum
• Carter, Samantha (Col.)
• Casta
• Cleo
• Charin
• Collins (Dr.)
• Corrigan (Dr.)
• Cowen (Chief)
• Coughlin
• Crown (Lt.)

• Dex, Ronon
• Dira
• Donaldson (Dr.)
• Doran
• Donaldson
• Druhin (Chancellor)
• Dumais (Dr.)

• Eldon
• Eldred
• Ellia
• Emmagan, Teyla
• Ennea
• Everett, Dillon (Col.)

• Ford, Aiden (Lt.)

• Gall, Brendan (Dr.)
• Goran
• Griffin
• Grodin, Peter (Dr.)

• Halling
• Hammond, George (General)
• Hansen
• Harriman, Walter (Sgt.)
• Hays (Dr.)
• Heightmeyer, Kate (Dr.)
• Hendon
• Hermiod
• Hedda

• Jace
• Jackson, Daniel (Dr.)
• Janus
• Jinto

• Kanayo
• Kavanagh (Dr.)
• Kell
• Keras
• Kolya, Acastus (Commander)

• Landry, Hank (General)
• Lee, Bill (Dr.)
• Lindsay (Dr.)
• Lindstrom (Dr.)
• Lorne (Major)
• Lycus (Chancellor)

• Mal Doran, Vala
• Mara
• Marin
• Markham (Sgt.)
• Marta
• Mattas
• McKay, Rodney (Dr.)
• McNab (Dr.)
• Melia
• Merell
• Michael (Lt. Michael Kenmore)
• Miko (Dr.)
• Mitchell, Cameron (Lt. Col.)
• Monroe (Dr.)
• Moore (Dr.)
• Moros

• Neera
• Neleus
• Norina
• Novak, Lindsay (Dr.)

• O'Neill, Jack (General)
• Optican (Dr.)
• Oron
• Otho

• Parrish (Dr.)
• Pelias
• Perna
• Peterson (Dr.)
• Phoebus
• Pranos
• Prenum

• Radim, Dahlia
• Radim, Ladon
• Reed

• Sanir
• Sar, Chaya (Athar)
• Shen Xiaoyi
• Sheppard, John (Col.)
• Sherman
• Simpson (Dr.)
• Sincha, Solen
• Smeadon
• Smith
• Sora
• Stackhouse (Sgt.)
• Steve the Wraith
• Stevens
• Sumner, Marshall (Col.)

• Tagan
• Tavius
• Teal'c
• Teer
• Teira
• Thalan
• Toran
• Torrell
• Tyrus

• Vogel (Dr.)

• Wagner (Dr.)
• Walker
• Wallace, Simon (Dr.)
• Weir, Elizabeth (Dr.)
• Wex
• Woolsey, Richard

• Zaddik
• Zarah
• Zelenka, Radek (Dr.)

• Atlantis Technician (early Season 1)
• Atlantis Technician/Sergeant (late Season 1, early Season 2) ("Chuck")
• Aurora Captain
• Aurora First Officer
• "Fog" aliens from M5S-224
• Lord Protector from "The Tower"
• Olesian Magistrate
• Wraith Keeper from "Rising"
• Wraith Queen from "The Lost Boys"/"The Hive"
• Wraith from "Condemned"
• Wraith from "Aurora"
• Wraith Queen from "Allies"
• Wraith from "Allies"