- Joe Flanigan
- Â Lt. Colonel John Sheppard / ... 99 episodes, 2004-2009
- Rachel Luttrell
- Â Teyla Emmagan 99 episodes, 2004-2009
- David Hewlett
- Â Dr. Rodney McKay / ... 99 episodes, 2004-2009
- Jason Momoa
- Â Ronon Dex 78 episodes, 2005-2009
- Torri Higginson
- Â Dr. Elizabeth Weir 65 episodes, 2004-2008
- Paul McGillion
- Â Dr. Carson Beckett 63 episodes, 2004-2009
- David Nykl
- Â Dr. Radek Zelenka 55 episodes, 2004-2009
- Chuck Campbell
- Â Chuck the Technician / ... 37 episodes, 2005-2009
- Jewel Staite
- Â Dr. Jennifer Keller / ... 33 episodes, 2005-2009
- Jon Johnson
- Â Parker / ... 2 episodes, 2004-2009
- Colin Decker
- Â Marine / ... 1 episode, 2004-2008
- Lalo Espejo
- Â Scientist 1 episode, 2005-2008
- D. Harlan Cutshall
- Â Marine / ... 1 episode, 2004-2009
- Kavan Smith
- Â Major Evan Lorne / ... 29 episodes, 2005-2009
- Robert Picardo
- Â Richard Woolsey 26 episodes, 2006-2009
- Amanda Tapping
- Â Colonel Samantha Carter / ... 26 episodes, 2005-2009
- Rainbow Sun Francks
- Â Lt. Aiden Ford 26 episodes, 2004-2008
- Ed Huber
- Â Coughlin / ... 1 episode, 2005-2009
- Mitch Pileggi
- Â Colonel Steven Caldwell / ... 23 episodes, 2005-2009
- Christopher Heyerdahl
- Â Todd the Wraith / ... 22 episodes, 2004-2009
- Craig Fraser
- Â Marine / ... 2 episodes, 2004-2008
- James Lafazanos
- Â Wraith / ... 17 episodes, 2004-2008
- Andre Benjamin
- Â Walker / ... 1 episode, 2004-2005
- Colin Corrigan
- Â Rivers / ... 3 episodes, 2004-2008
- Gary Jones
- Â Chief Mst Sgt. Walter Harriman 12 episodes, 2004-2009
- Sharon Taylor
- Â Amelia Banks / ... 12 episodes, 2007-2009
- David Neale
- Â Atlantis Technician / ... 1 episode, 2004-2009
- Connor Trinneer
- Â Michael Kenmore 11 episodes, 2006-2008
- Jay Williams
- Â Atlantis Technician / ... 1 episode, 2005-2008
- Dean Marshall
- Â Sgt. Bates / ... 10 episodes, 2004-2008
- Linda Ko
- Â Marie / ... 8 episodes, 2007-2008
- James Bamford
- Â Male Wraith / ... 1 episode, 2005-2008
- Craig Veroni
- Â Dr. Peter Grodin 8 episodes, 2004-2005
- Andee Frizzell
- Â Wraith Queen 10 episodes, 2004-2008
- Kirby Morrow
- Â Captain Dave Kleinman / ... 9 episodes, 2005-2008
- Darren Hird
- Â Daedalus Engineer / ... 2 episodes, 2004-2006
- Jeffrey C. Robinson
- Â Wraith / ... 1 episode, 2005-2008
- Bill Dow
- Â Dr. Bill Lee 7 episodes, 2005-2008
- Trevor Devall
- Â Hermiod 7 episodes, 2005-2006
- Robert Davi
- Â Commander Acastus Kolya 7 episodes, 2004-2008
- Scott Heindl
- Â Wraith / ... 8 episodes, 2006-2008
- Ben Cotton
- Â Dr. Kavanagh 6 episodes, 2004-2009
- Tyler McClendon
- Â Kenny Wraith / ... 6 episodes, 2008-2009
- Heather Doerksen
- Â Captain Pat Meyers / ... 6 episodes, 2005-2008
- James Chutter
- Â Babbis / ... 6 episodes, 2006-2008
- Paul Lazenby
- Â Marine / ... 1 episode, 2005-2008
- Sean Millington
- Â Marine / ... 1 episode, 2004-2008
- Claire Rankin
- Â Dr. Kate Heightmeyer 5 episodes, 2005-2007
- Michael Beach
- Â Colonel Abe Ellis 6 episodes, 2007-2009
- Ryan Robbins
- Â Ladon Radim 5 episodes, 2004-2006
- Martin Christopher
- Â Major Kevin Marks / ... 6 episodes, 2008-2009
- Patrick Sabongui
- Â Kanaan / ... 6 episodes, 2006-2008
- Edmond Kato Wong
- Â Technician 5 episodes, 2004
- Beau Bridges
- Â Major General Hank Landry 5 episodes, 2005-2006
- Boyan Vukelic
- Â Sgt. Stackhouse 6 episodes, 2004-2005
- Annalise MacCulloch
- Â Torren 4 episodes, 2008
- Gerry Durand
- Â Captain Levine / ... 4 episodes, 2005-2008
- Dan Payne
- Â Big Wraith / ... 6 episodes, 2004-2008
- Anne Openshaw
- Â Daedalus Pilot 1 episode, 2005-2008
- Richard Dean Anderson
- Â Major General Jack O'Neill / ... 4 episodes, 2004-2006
- Kate Hewlett
- Â Jeannie Miller 4 episodes, 2006-2008
- Brenda James
- Â Dr. Katie Brown 4 episodes, 2005-2008
- Brendan Penny
- Â Todd the Wraith / ... 5 episodes, 2008
- Rick Wong
- Â Dr. McBride / ... 2 episodes, 2007-2008
- Brian Ho
- Â Marine / ... 1 episode, 2006-2008
- Loyd Bateman
- Â Soldier / ... 1 episode, 2005-2008
- Nickolas Baric
- Â Genii Soldier / ... 1 episode, 2005-2008
- Herbert D. Sommerfeld
- Â Major Jean Forest 1 episode, 2007-2008
- Erin Chambers
- Â Sora 5 episodes, 2004-2008
- Michael Shanks
- Â Dr. Daniel Jackson 3 episodes, 2004-2008
- Garwin Sanford
- Â Simon Wallis 3 episodes, 2004-2005
- John O'Callaghan
- Â Niam 4 episodes, 2006-2008
- Colm Meaney
- Â Cowen 4 episodes, 2004-2008
- David Ogden Stiers
- Â Oberoth 5 episodes, 2006-2008
- Leela Savasta
- Â Captain Alicia Vega / ... 3 episodes, 2006-2008
- Lindsay Collins
- Â Dr. Biro 3 episodes, 2004-2007
- Donna Soares
- Â Dr. Coleman 3 episodes, 2006-2007
- Sheri Rabold
- Â Scientist / ... 3 episodes, 2006-2007
- Glenn Ennis
- Â 1st Warrior / ... 1 episode, 2005-2007
- Douglas Chapman
- Â Sgt. Cole / ... 2 episodes, 2005-2008
- Geoff Redknap
- Â Old Colonel Sumner / ... 1 episode, 2004-2008
- Andy Nez
- Â Genii Soldier / ... 1 episode, 2004-2005
- Christopher Judge
- Â Teal'c 2 episodes, 2007-2008
- Clayton Landey
- Â Colonel Dillon Everett 2 episodes, 2005
- Richard Kind
- Â Lucius Lavin 2 episodes, 2006
- Jaime Ray Newman
- Â Lt. Laura Cadman 2 episodes, 2005
- Jill Wagner
- Â Larrin 2 episodes, 2007-2008
- Sean Campbell
- Â Solen / ... 2 episodes, 2005-2008
- Ellie Harvie
- Â Dr. Lindsey Novak 2 episodes, 2005
- Aaron Abrams
- Â Kanayo 2 episodes, 2005
- Tamlyn Tomita
- Â Chinese Ambassador Shen Xiaoyi / ... 2 episodes, 2006-2008
- Johann Helf
- Â Nabel / ... 2 episodes, 2007-2008
- Brendan Gall
- Â Kaleb Miller 2 episodes, 2006-2007
- Mark Dacascos
- Â Tyre 2 episodes, 2007-2008
- Michelle Morgan
- Â Dr. Elizabeth Weir / ... 2 episodes, 2008
- Joseph May
- Â Sgt. Markham 3 episodes, 2004-2005
- Peter Flemming
- Â Agent Malcolm Barrett 2 episodes, 2005-2007
- Jonathon Young
- Â Dr. Parrish / ... 2 episodes, 2005-2008
- Agam Darshi
- Â Athosian #2 / ... 2 episodes, 2004-2008
- Madison Bell
- Â Madison Miller 2 episodes, 2006-2007
- Brahm Taylor
- Â Lathan 2 episodes, 2006
- Yee Jee Tso
- Â Systems Tech / ... 2 episodes, 2007
- Reece Thompson
- Â Jinto 2 episodes, 2004
- Rob Avery
- Â Lt. Miller 2 episodes, 2005-2007
- Woody Jeffreys
- Â Bouncer 2 episodes, 2005
- Niall Matter
- Â Lt. Kemp 2 episodes, 2007-2008
- Brenda McDonald
- Â Charin 2 episodes, 2005
- David MacInnis
- Â Talus 2 episodes, 2006
- Casey Dubois
- Â Wex 2 episodes, 2004
- Melia McClure
- Â Ancient Woman / ... 2 episodes, 2004
- Aleks Holtz
- Â Guard 2 episodes, 2005
- Panou
- Â Cetus 2 episodes, 2006
- Ron Blecker
- Â Guard / ... 2 episodes, 2005-2007
- Elias Toufexis
- Â Replicator 2 episodes, 2006
- Mike Dopud
- Â Cowen's Elite Guard / ... 1 episode, 2006-2008
- Sean Tyson
- Â Jervis / ... 1 episode, 2005-2008
- Jodie Graham
- Â Genii Soldier / ... 1 episode, 2004
- David Orth
- Â Captain Radner 1 episode, 2005
- Steve Archer
- Â Generator-Room Guard 1 episode, 2004
- Conan Graham
- Â Genii Soldier #2 / ... 1 episode, 2004
- G. Michael Gray
- Â Geldaran Citizen / ... 1 episode, 2006-2008
- David Quinlan
- Â Ancient / ... 1 episode, 2006
- Artine Tony Browne
- Â Trader / ... 1 episode, 2004-2008
- Lynda Riley
- Â Brunette 1 episode, 2004
- Dane MacFahden
- Â Courtier / ... 1 episode, 2004-2008
- Kory Grim
- Â Human-Wraith Hybrid / ... 1 episode, 2008
- Lauro David Chartrand-Del Valle
- Â Bola Kai Warrior / ... 1 episode, 2004-2007
- Paul Jarrett
- Â Captain Hendricks / ... 1 episode, 2005-2008
- Kerry Blouin
- Â Replicator Guard #1 1 episode, 2006-2007
- Dan Shea
- Â Sgt. Siler 1 episode, 2004-2006
- Charles Cohen
- Â Poker Player #3 / ... 1 episode, 2005-2008
- Don S. Davis
- Â Major General George Hammond 1 episode, 2004
- Gildart Jackson
- Â Janus 1 episode, 2004
- Alan Scarfe
- Â Chancellor Druhin 1 episode, 2004
- Richard Ian Cox
- Â Dr. Brendan Gall 1 episode, 2004
- Courtenay J. Stevens
- Â Keras 1 episode, 2004
- Martin Jarvis
- Â Davos 1 episode, 2007
- Jodelle Ferland
- Â Harmony 1 episode, 2008
- Kari Wuhrer
- Â Nancy Sheppard 1 episode, 2008
- Allison Hossack
- Â Perna 2 episodes, 2004-2005
- Dominic Zamprogna
- Â Aries 1 episode, 2004
- Matthew Walker
- Â Moros 1 episode, 2004
- Ari Cohen
- Â Tyrus 1 episode, 2004
- Paul Magel
- Â Dr. Abrams 2 episodes, 2004-2005
- Robert Thurston
- Â Zarah 1 episode, 2004
- Peter Woodward
- Â Otho 1 episode, 2005
- Terence Kelly
- Â Orin 1 episode, 2005
- Chad Morgan
- Â Teer 1 episode, 2005
- Jana Mitsoula
- Â Allina 1 episode, 2005
- Darcy Belsher
- Â Eldon 1 episode, 2005
- Laura Harris
- Â Nola 1 episode, 2006
- Frank Collison
- Â Keturah 1 episode, 2006
- Kevin McNulty
- Â Chancellor Lycus 1 episode, 2006
- Brent Stait
- Â Michael Kenmore 2 episodes, 2006-2008
- Matthew Del Negro
- Â Mike Branton 1 episode, 2007
- Kenneth Welsh
- Â Jamus 1 episode, 2007
- Dawn Olivieri
- Â Neeva Casol 1 episode, 2008
- Dave Foley
- Â Malcolm Tunney 1 episode, 2008
- Nicole de Boer
- Â Dr. Alison Porter 1 episode, 2008
- Neil Jackson
- Â Wraith 1 episode, 2008
- Emma Lahana
- Â Ava Dixon 1 episode, 2008
- Rob LaBelle
- Â Coolidge 1 episode, 2008
- Joel Polis
- Â Elson 1 episode, 2008
- Alexis Kellum-Creer
- Â Flora 1 episode, 2008
- Isaah Brown
- Â Caminous 1 episode, 2008
- Ross Hull
- Â Dr. Corrigan 1 episode, 2004
- Noah Beggs
- Â Dex 1 episode, 2004
- Sam Charles
- Â Casta 1 episode, 2004
- Jay Brazeau
- Â Lord Protector 1 episode, 2005
- John Innes
- Â Zaddik 1 episode, 2005
- Bruce Dawson
- Â Captain 1 episode, 2005
- Christian Bocher
- Â Torrell 1 episode, 2005
- David McNally
- Â Avrid 1 episode, 2005
- Alan Ruck
- Â Dr. Fletcher 1 episode, 2006
- Brandy Ledford
- Â Norina 1 episode, 2006
- David Dayan Fisher
- Â Baden 1 episode, 2006
- Chiara Zanni
- Â Melena 1 episode, 2006
- Hellena Taylor
- Â Asuran Counselor #1 1 episode, 2006
- Dean Wray
- Â Genii 1 episode, 2006
- Dexter Bell
- Â Sgt. Barroso 1 episode, 2006
- Danny Trejo
- Â Omal 1 episode, 2007
- Joris Jarsky
- Â Herick 1 episode, 2007
- Sean Rogerson
- Â Nevik 1 episode, 2007
- Janina Gavankar
- Â Sgt. 'Dusty' Mehra 1 episode, 2008
- Yan-Kay Crystal Lowe
- Â Mardola 1 episode, 2008
- Marshall Bell
- Â Terrence Kramer 1 episode, 2008
- Alan Blumenfeld
- Â Dimas 1 episode, 2008
- Apollonia Vanova
- Â Wraith Queen 1 episode, 2008
- Stephen E. Miller
- Â Dr. Richard Poole 1 episode, 2008
- Aidan Drummond
- Â Renord 1 episode, 2008
- Neela Todd
- Â Celise 1 episode, 2008
- Leonor Varela
- Â Chaya Sar 1 episode, 2004
- Jessica Amlee
- Â Cleo 1 episode, 2004
- Stephen Spender
- Â Mitch 1 episode, 2004
- Lucia Walters
- Â Lara 1 episode, 2005
- Pascale Hutton
- Â First Officer Trebal 1 episode, 2005
- Nicole Muñoz
- Â Hedda 1 episode, 2005
- A.C. Peterson
- Â Magistrate 1 episode, 2005
- Matthew Harrison
- Â Scientist #1 1 episode, 2005
- Adrian Hough
- Â Pranos 1 episode, 2005
- William MacDonald
- Â Captain Griffin 1 episode, 2005
- Chris Britton
- Â Prenum 1 episode, 2005
- David Bloom
- Â Eldred 1 episode, 2005
- Stephen Dimopoulos
- Â Goran 1 episode, 2005
- Julia Benson
- Â Willa 1 episode, 2006
- Sonja Bennett
- Â Dahlia Radim 1 episode, 2006
- Meredith McGeachie
- Â Wench 1 episode, 2006
- Kerry Sandomirsky
- Â Asuran Counselor #2 1 episode, 2006
- Curtis Caravaggio
- Â Major Elliot Rutherford 1 episode, 2006
- Nels Lennarson
- Â Captain Holland 1 episode, 2006
- Aleks Paunovic
- Â Rakai 1 episode, 2007
- Michael Cram
- Â Silas 1 episode, 2007
- Kimberley Warnat
- Â Linara 1 episode, 2007
- Ryan Jefferson Booth
- Â Lt. Negley 1 episode, 2007
- Michael Tayles
- Â Dr. Graydon 1 episode, 2007
- Christina Cox
- Â Major Anne Teldy 1 episode, 2008
- Chelah Horsdal
- Â Erran 1 episode, 2008
- Dylan Neal
- Â Dave Sheppard 1 episode, 2008
- Bill Nye
- Â Bill Nye 1 episode, 2008
- Robert Moloney
- Â Koracen 1 episode, 2008
- David Richmond-Peck
- Â Toran 1 episode, 2008
- Richard Zeman
- Â Commander Wraith 1 episode, 2008
- David Lovgren
- Â Kelore 1 episode, 2008
- Nico Ghisi
- Â Kid #3 1 episode, 2008
- Shane Thomas Meier
- Â Neleus 1 episode, 2004
- Fiona Hogan
- Â Simpson 1 episode, 2004
- Michael Puttonen
- Â Smeadon 1 episode, 2004
- Damon Johnson
- Â Peterson 1 episode, 2004
- Laura Mennell
- Â Sanir 1 episode, 2005
- Chris Gauthier
- Â Mattas 1 episode, 2005
- Richard Kahan
- Â Baldric 1 episode, 2005
- Jenn Bird
- Â Neera 1 episode, 2005
- Scott E. Miller
- Â Pilot 1 episode, 2005
- Peter Abrams
- Â Dr. Donaldson 1 episode, 2005
- Tom Bates
- Â Barkeep 1 episode, 2005
- Christina Jastrzembska
- Â Dr. Weir's Mother 1 episode, 2006
- Colby Johannson
- Â Lt. Kagan 1 episode, 2006
- Patricia Nudd
- Â Ancient Woman 1 episode, 2006
- Kyra Zagorsky
- Â Ara 1 episode, 2007
- Reese Alexander
- Â Major Jordan 1 episode, 2007
- Noel Johansen
- Â Dr. Dickenson 1 episode, 2007
- Zach Selwyn
- Â Scientist #2 1 episode, 2007
- Sam Polin
- Â Creature 1 episode, 2007
- Daniella Alonso
- Â Katana Labrea 1 episode, 2008
- Neil deGrasse Tyson
- Â Neil deGrasse Tyson 1 episode, 2008
- Patrick Gilmore
- Â Genii Soldier #1 1 episode, 2008
- Anna Galvin
- Â Vanessa Conrad 1 episode, 2008
- Sarah Deakins
- Â Renni 1 episode, 2008
- Leanne Adachi
- Â Lia 1 episode, 2008
- Ron Selmour
- Â Jannick 1 episode, 2008
- Alberto Ghisi
- Â Kid #4 1 episode, 2008
- Tracy Waterhouse
- Â Commander Sobel 1 episode, 2008
- Tobias Slezak
- Â Myrus 1 episode, 2008
- Christopher Pearce
- Â Marine Williams 1 episode, 2008
- Domonique Danielle
- Â Burly Woman 1 episode, 2008
- Julie Patzwald
- Â Pelius 1 episode, 2004
- Brendan Beiser
- Â Tavius 1 episode, 2005
- Kyla Wise
- Â Marin 1 episode, 2005
- Nimet Kanji
- Â Dr. Bryce 1 episode, 2005
- Nico McEown
- Â Boy 1 episode, 2005
- Paul Anthony
- Â Jace 1 episode, 2005
- Barry Greene
- Â Hendon 1 episode, 2005
- Todd Hann
- Â Bravo Leader 1 episode, 2005
- Megan Leitch
- Â Captain Helia 1 episode, 2006
- Lisa Marie Caruk
- Â Heleen 1 episode, 2006
- Gina Stockdale
- Â Enid 1 episode, 2006
- Adam Bergquist
- Â Amaris 1 episode, 2006
- James Long
- Â Helkin 1 episode, 2006
- Gideon Karmel
- Â Major Leonard 1 episode, 2006
- Caroline Cave
- Â Dr. Cole 1 episode, 2007
- Chris Kalhoon
- Â Crewman 1 episode, 2007
- Frank Vincent
- Â Poker Player #1 1 episode, 2008
- Todd Thomson
- Â Bordal 1 episode, 2008
- Kaaren de Zilva
- Â Shiana 1 episode, 2008
- Richard Stroh
- Â Genii Soldier #2 1 episode, 2008
- Darren Dolynski
- Â Mirellus 1 episode, 2008
- Brad Dryborough
- Â Lead Hybrid 1 episode, 2008
- Meghan Black
- Â Marta 1 episode, 2004
- Calum Worthy
- Â Hunter Kid 1 episode, 2004
- Neil Maffin
- Â Merell 1 episode, 2004
- Robert Weiss
- Â Scientist 1 episode, 2004
- Nahanni Arntzen
- Â Dumais 1 episode, 2004
- Alexos Andros
- Â Technician 1 episode, 2004
- Chelan Simmons
- Â Mara 1 episode, 2005
- Kimani Ray Smith
- Â Dr. Lindstrom 1 episode, 2005
- Blake Stadel
- Â Young Zaddik 1 episode, 2005
- France Perras
- Â Nurse 1 episode, 2005
- Ryan W. Smith
- Â Aurora Crewman 1 episode, 2005
- Tina-Jane Krohn
- Â Scientist 1 episode, 2005
- Patrick Gallagher
- Â Vonos 1 episode, 2006
- John Shaw
- Â Garth 1 episode, 2006
- Michelle Brezinski
- Â Nurse 1 episode, 2006
- Johnny Cuthbert
- Â Fortnum 1 episode, 2006
- Anna Williams
- Â Female Tech 1 episode, 2006
- Penelope Corrin
- Â Dr. Lindsay 1 episode, 2006
- David Pauls
- Â Aton 1 episode, 2006
- Josh Blacker
- Â Screaming Man 1 episode, 2007
- Steven Culp
- Â Henry Wallace 1 episode, 2007
- Lara Gilchrist
- Â Dr. Hewston 1 episode, 2007
- Tammy Hui
- Â Replicator Gate Tech 1 episode, 2007
- Syn Narula
- Â Young Doctor 1 episode, 2007
- Arran Landry
- Â Townsperson 1 episode, 2007
- Steve Schirripa
- Â Poker Player #2 1 episode, 2008
- Jonathan Holmes
- Â Magistrate 1 episode, 2008
- Ecstasia Sanders
- Â Villager 1 episode, 2008
- Michael Coleman
- Â Front Desk Guy 1 episode, 2008
- Adam Lolacher
- Â Genii Man 1 episode, 2008
- Morris Chapdelaine
- Â Newborn Wraith 1 episode, 2008
- Adrian Hein
- Â Replicator 1 episode, 2008
- Haley Cook
- Â Dr. Kiang 1 episode, 2008
- Richard Busch
- Â Marine 1 episode, 2008
- Brandon Blue
- Â Hybrid 1 episode, 2008
- Robert Patrick
- Â Colonel Marshall Sumner 4 episodes, 2004-2008
- Don Ackerman
- Â Doran 1 episode, 2004
- Peter Grier
- Â Hays 1 episode, 2004
- Nicole Rudell
- Â Doctor 1 episode, 2004
- Tanya Champoux
- Â Screaming Woman 1 episode, 2005
- Anna Cummer
- Â Petra 1 episode, 2005
- Manami Hara
- Â Miko 1 episode, 2005
- Graham Kosakoski
- Â Aurora Guard 1 episode, 2005
- Terry Howson
- Â Kell 1 episode, 2005
- Dan Joffre
- Â Barkeep 1 episode, 2006
- Amanda Burke
- Â Ancient Scientist #2 1 episode, 2006
- Ashley O'Connell
- Â Fruit Stand Owner 1 episode, 2006
- Christian Lattman
- Â Shadowy Figure 1 episode, 2006
- Daniel Bacon
- Â Dr. Watson 1 episode, 2007
- Joel Cottingham
- Â Doctor 1 episode, 2007
- Karin Konoval
- Â Second in Command 1 episode, 2008
- Mylène Dinh-Robic
- Â Anika 1 episode, 2008
- Jody Thompson
- Â Hospital Nurse 1 episode, 2008
- Aaron Craven
- Â Commander Wraith 1 episode, 2008
- Kwesi Ameyaw
- Â Tactical Sergeant 1 episode, 2008
- Yurij Kis
- Â Local #1 1 episode, 2008
- Jerry Penacoli
- Â Genii Warrior 1 episode, 2008
- Toren Atkinson
- Â Dempster 1 episode, 2008
- Naomi Dayneswood
- Â Assistant 1 episode, 2008
- Cory Monteith
- Â Genii Private 1 episode, 2004
- Michelle Addison
- Â Johnson 1 episode, 2004
- Santo Lombardo
- Â Athosian #1 1 episode, 2004
- Mark Gibbon
- Â Constable 1 episode, 2005
- Pete Graham
- Â Arja 1 episode, 2005
- Michael Boisvert
- Â Bridge Lieutenant 1 episode, 2005
- Daniel Boileau
- Â Cocoon Victim 1 episode, 2005
- Mark Pawson
- Â Collins 1 episode, 2005
- Kayma Seamark
- Â Young Wraith 1 episode, 2005
- Grahame Andrews
- Â Porta 1 episode, 2005
- Emy Aneke
- Â Lt. Morrison 1 episode, 2006
- Todd Scott
- Â Malik 1 episode, 2006
- Meg Roe
- Â Young Barkeep 1 episode, 2006
- Michael Chase
- Â Ancient Med Tech 1 episode, 2006
- Graem Beddoes
- Â Scientist 1 episode, 2007
- Ernie Jackson
- Â Replicator 1 episode, 2007
- Byron Lucas
- Â Replicator 1 episode, 2007
- Mark Gash
- Â Doctor 1 episode, 2007
- Ken Kirzinger
- Â Bartender 1 episode, 2008
- David Beairsto
- Â Merchant 1 episode, 2008
- Jeremy Jones
- Â Lt. Edison 1 episode, 2008
- Blaine Anderson
- Â Local #2 1 episode, 2008
- Mark Burgess
- Â Sick Guy 1 episode, 2008
- Ayesha Shiva
- Â Woman 1 episode, 2008
- Shirley Ng
- Â Scientist 1 episode, 2008
- Allison Graham
- Â Lt. Crown 1 episode, 2004
- John Tierney
- Â Astrum 1 episode, 2005
- Mark Hoeppner
- Â Bartender 1 episode, 2005
- Kevin Minato
- Â Boy with Orin 1 episode, 2005
- Alexandra Carter
- Â Linor 1 episode, 2006
- BJ Harrison
- Â Female Merchant 1 episode, 2008
- Claire Robertson
- Â Mila 1 episode, 2008
- Paul Herbert
- Â Technician 1 episode, 2008
- Chris Nowland
- Â Crime Scene Guy 1 episode, 2008
- Mark Curtin
- Â Guard 1 episode, 2008
- Carlo Fanella
- Â Genii Soldier 1 episode, 2008
- Jason Diablo
- Â Guard #2 2 episodes, 2004-2005
- Simon Longmore
- Â Tathal 1 episode, 2005
- John Stewart
- Â Villager 1 episode, 2006
- Andy Maton
- Â Chapman - British Representative 1 episode, 2006
- Doron Bell
- Â SF 1 episode, 2007
- Shaw Madson
- Â Sergeant Matthews 1 episode, 2007
- Robert Clark
- Â Dr. Gerald Baxter 1 episode, 2007
- Daevyd Avalon
- Â Motel Manager 1 episode, 2008
- Linden Banks
- Â Dovelock 1 episode, 2008
- Colin Cunningham
- Â Major Paul Davis 1 episode, 2009
- Stefano DiMatteo
- Â Toran 1 episode, 2004
- Phoenix Ly
- Â Yamato 1 episode, 2004
- Umar Gordon
- Â Dr. Monroe 1 episode, 2005
- Libby Osler
- Â Sharon Wallace 1 episode, 2007
- Pearce Visser
- Â Chess Opponent 1 episode, 2007
- Christian Sloan
- Â Hybrid 1 episode, 2008
- John Sampson
- Â Human Guard 1 episode, 2008
- Jason Edward Coleman
- Â Larrin's Crewman 1 episode, 2008
- Brandy Kopp
- Â Pretty Marine 1 episode, 2007
- Carmen Moore
- Â Newspaper Reporter 1 episode, 2008
- Patricia Cullen
- Â Replicator Crew Member 2 episodes, 2008
- Igor Hudacek Jr.
- Â Scavenger 1 episode, 2008
- Dan Kashagama
- Â Doctor 1 episode, 2008
- Patrick Lambier
- Â Replicator Guard #2 1 episode, 2006
- Loren Christopher Michaels
- Â Poker Dealer 1 episode, 2008
- Rene-Lee Sylvain
- Â Asuran Tech 1 episode, 2008
- David Milchard
- Â SGC Technician 1 episode, 2004
- Angelique Naude
- Â Young Female Scientist 1 episode, 2006
- Andrew Moxham
- Â Wallace 1 episode, 2006
- Joel Goldsmith
- Â Poker Player #4 1 episode, 2008
- Roy Winston
- Â Poker Player #5 1 episode, 2008
- Bro Gilbert
- Â Scientist #1 3 episodes, 2004-2005
- P.J. Prinsloo
- Â Anders 1 episode, 2006
- Todd Brunson
- Â Poker Player #6 1 episode, 2008
- Peter Grasso
- Â Scientist #2 2 episodes, 2004
- Ona Grauer
- Â Ayiana 1 episode, 2004
- Aaron Dudley
- Â Male Ancient 1 episode, 2004
- Mary Joan Buchanan
- Â Beckett's Mom 1 episode, 2004
- Tony Baretta
- Â Smitty / ... (uncredited) 29 episodes, 2004-2009
- Bill Butt
- Â Doctor (uncredited) 19 episodes, 2004-2009
- Ari Solomon
- Â Billick / ... (uncredited) 11 episodes, 2004-2008
- Mario Ferrante
- Â Marine / ... (uncredited) 11 episodes, 2004-2008
- Chris Bradford
- Â Marine / ... (uncredited) 10 episodes, 2004-2005
- Tiffani Timms
- Â Ellen / ... (uncredited) 9 episodes, 2005-2008
- Glen Brkich
- Â Marine / ... (uncredited) 9 episodes, 2005-2008
- Sean Kohnke
- Â Daedalus Crewman / ... (uncredited) 9 episodes, 2005-2006
- Hector Navarro
- Â Ramirez (uncredited) 8 episodes, 2006-2008
- Peter Kufluk
- Â MSgt. Connor (uncredited) 7 episodes, 2004-2008
- Barry Nerling
- Â Sgt. Green / ... (uncredited) 7 episodes, 2005-2008
- Simon Burnett
- Â Marine / ... (uncredited) 6 episodes, 2005-2008
- Shekhar Paleja
- Â Doctor (uncredited) 6 episodes, 2007-2008
- Chris Ang
- Â Athosian / ... (uncredited) 5 episodes, 2004-2007
- Justin Doran
- Â Marine / ... (uncredited) 5 episodes, 2005-2008
- Raoul Ganeev
- Â Marine / ... (uncredited) 5 episodes, 2005-2006
- Mike Desabrais
- Â Genii Soldier / ... (uncredited) 4 episodes, 2005-2008
- Clayton Dean Watmough
- Â Marine / ... (uncredited) 4 episodes, 2005-2008
- Uros Certic
- Â Marine (uncredited) 4 episodes, 2006-2008
- Hakan Coskuner
- Â Medic (uncredited) 4 episodes, 2006-2008
- Rob 'Sluggo' Boyce
- Â Asuran Guard / ... (uncredited) 3 episodes, 2004-2008
- Joe Blair
- Â Genii Soldier (uncredited) 3 episodes, 2004-2006
- Daniel Joseph Rizzuto
- Â Ford's Coalition Member / ... (uncredited) 3 episodes, 2004-2005
- Marc Petey
- Â Genii Soldier (uncredited) 3 episodes, 2004
- Shohan Felber
- Â Genii Soldier (uncredited) 3 episodes, 2004
- Gentry Bromfield
- Â Marine / ... (uncredited) 3 episodes, 2005
- Greg Zach
- Â Marine / ... (uncredited) 3 episodes, 2006-2008
- Mike Cook
- Â Marine (uncredited) 3 episodes, 2006-2007
- Steve Kiziak
- Â Genii Soldier / ... (uncredited) 2 episodes, 2004-2007
- Paul Cummings
- Â Genii Soldier / ... (uncredited) 2 episodes, 2004-2006
- Nicholas W. von Zill
- Â Genii Soldier / ... (uncredited) 2 episodes, 2004-2005
- Flynn Falcone
- Â Genii Soldier (uncredited) 2 episodes, 2004
- Dean Hinchey
- Â Medical Assistant / ... (uncredited) 2 episodes, 2005-2008
- Brett Wise
- Â Daedalus Technician / ... (uncredited) 2 episodes, 2005-2008
- Sonny Dean
- Â Bola Kai Warrior / ... (uncredited) 2 episodes, 2005-2007
- Sylvesta Stuart
- Â Marine (uncredited) 2 episodes, 2005-2006
- Chad Bellamy
- Â Marine / ... (uncredited) 2 episodes, 2005-2006
- Greig Thorlacius
- Â Satedan Soldier / ... (uncredited) 2 episodes, 2005-2006
- Shawn Stewart
- Â Genii Soldier #1 / ... (uncredited) 2 episodes, 2005
- Andrew Hedge
- Â Marine / ... (uncredited) 2 episodes, 2005
- Jason Hanmer
- Â Marine (uncredited) 2 episodes, 2005
- Christopher Gordon
- Â Genii Soldier / ... (uncredited) 3 episodes, 2006-2008
- Hugo Steele
- Â Lab Guard / ... (uncredited) 2 episodes, 2006-2008
- Rob Hayter
- Â Asuran / ... (uncredited) 2 episodes, 2006
- Chad Kartz
- Â Fair-Haired Villager / ... (uncredited) 2 episodes, 2006
- Richard Thompson
- Â Airman Fuller / ... (uncredited) 2 episodes, 2007-2009
- Josh Bazinet
- Â Asuran Tech / ... (uncredited) 2 episodes, 2008-2009
- Holly Elissa
- Â Old Weir (uncredited) 1 episode, 2004
- Sean Amsing
- Â Athosian (uncredited) 1 episode, 2004
- Micah Gardener
- Â Villager (uncredited) 1 episode, 2004
- Alejandro Rae
- Â Crossbow Villager (uncredited) 1 episode, 2004
- Brett Chan
- Â Genii Soldier (uncredited) 1 episode, 2004
- Todd Mann
- Â Genii Soldier (uncredited) 1 episode, 2004
- Alana Husband
- Â Ennea (uncredited) 1 episode, 2004
- Byron Brisco
- Â Genii Soldier (uncredited) 1 episode, 2004
- Mike Azevedo
- Â Scientist (uncredited) 1 episode, 2004
- Nick Misura
- Â Genii Villager (uncredited) 1 episode, 2004
- Kenneth W. Yanko
- Â Genii Officer (uncredited) 1 episode, 2004
- Peter DeLuise
- Â Dr. P. Smith (uncredited) 1 episode, 2005
- Dean Redman
- Â Marine (uncredited) 1 episode, 2005
- Brad Loree
- Â Tower Constable #4 (uncredited) 1 episode, 2005
- James Purcell
- Â Villager (uncredited) 1 episode, 2005
- Paul Wu
- Â Olesian Prisoner (uncredited) 1 episode, 2005
- Thomas Potter
- Â Marine (uncredited) 1 episode, 2005
- James Michalopolous
- Â Genii Soldier #2 (uncredited) 1 episode, 2005
- Toby Berner
- Â Scientist (uncredited) 1 episode, 2005
- Chris Robson
- Â Aurora Crewmember (uncredited) 1 episode, 2005
- Bruce Woloshyn
- Â Atlantis Expedition Engineer (uncredited) 1 episode, 2005
- Diana Dutra
- Â Marine (uncredited) 1 episode, 2005
- Ken Jones
- Â Olesian Prisoner (uncredited) 1 episode, 2005
- Chris Franco
- Â Ford's Coalition Member (uncredited) 1 episode, 2005
- Dean Choe
- Â Marine (uncredited) 1 episode, 2005
- Martin Blaiz
- Â Marine (uncredited) 1 episode, 2005
- Les Asselstine
- Â Olesian Prisoner #1 (uncredited) 1 episode, 2005
- Norm Hirshfeldt
- Â Olesian Prisoner (uncredited) 1 episode, 2005
- Martin Wood
- Â Largent (uncredited) 1 episode, 2006
- Clay Virtue
- Â Genii Soldier (uncredited) 2 episodes, 2006-2008
- Billy Wickman
- Â Human Wraith (uncredited) 1 episode, 2006
- Fraser Aitcheson
- Â Marine (uncredited) 1 episode, 2006
- Link Baker
- Â Asuran (uncredited) 1 episode, 2006
- Martin Gero
- Â Danger Beckett (uncredited) 1 episode, 2006
- Clint Carleton
- Â Cowen's Elite Guard (uncredited) 1 episode, 2006
- Lars Grant
- Â Genii Soldier (uncredited) 2 episodes, 2006-2008
- Tommy Europe
- Â Satedan Soldier (uncredited) 1 episode, 2006
- Josh Byer
- Â Vonos' Follower (uncredited) 1 episode, 2006
- Ocean Bloom
- Â Lucius' Country Girl (uncredited) 1 episode, 2006
- Dave Hospes
- Â Genii Soldier (uncredited) 1 episode, 2006
- Benjamin Luk
- Â Villager (uncredited) 1 episode, 2006
- Linley Subryan
- Â Vonos' Follower (uncredited) 1 episode, 2006
- Heath Stevenson
- Â Genii Soldier (uncredited) 1 episode, 2006
- Hal Myshrall
- Â Asuran Guard (uncredited) 1 episode, 2006
- Sylvain Cameron
- Â Genii Soldier (uncredited) 1 episode, 2006
- Nancy Martin
- Â Bandaged Taranian (uncredited) 1 episode, 2006
- Adrian G. Griffiths
- Â Bola Kai Warrior (uncredited) 1 episode, 2007
- Twan Holliday
- Â Bola Kai Warrior (uncredited) 1 episode, 2007
- Donovan Cerminara
- Â TSgt. Nolan (uncredited) 1 episode, 2007
- Daniel Cudmore
- Â Ronon's Sparring Partner (uncredited) 1 episode, 2008
- Stephen Hawking
- Â Stephen Hawking (uncredited) 1 episode, 2008
- Brad Wright
- Â Blackjack Player (uncredited) 1 episode, 2008
- Sean Carey
- Â Fight Spectator (uncredited) 1 episode, 2008
- Kevin Blatch
- Â Scientist (uncredited) 1 episode, 2008
- Marie West
- Â Court Lady (uncredited) 1 episode, 2008
- Jason Bell
- Â Technician #1 (uncredited) 1 episode, 2008
- Maja Aro
- Â Female Experiment (uncredited) 1 episode, 2008
- Rocky Anderson
- Â Palace Guard (uncredited) 1 episode, 2008
- Derek Versteeg
- Â Coalition Guard (uncredited) 1 episode, 2008
- Shawn Beaton
- Â Human-Wraith Hybrid (uncredited) 1 episode, 2008
- Steven Stiller
- Â Replicator Crew Member (uncredited) 1 episode, 2008
- James Robbins
- Â Gambling Addict Spectator (uncredited) 1 episode, 2008
- Ivon R. Bartok
- Â Dice Player (uncredited) 1 episode, 2008
- Lanette Fugit Hannah
- Â The Cashier (uncredited) 1 episode, 2008
- Giorgio Miyashita
- Â Scientist (uncredited) 1 episode, 2008
- Kyle Horton
- Â Asuran (uncredited) 1 episode, 2008
- Debora Bastos
- Â Atlantis Technician (uncredited) 1 episode, 2008
- Wendy Carson
- Â Technician (uncredited) 1 episode, 2008
- Lani Gelera
- Â Combat Trainee (uncredited) 1 episode, 2008
- Lynn Smith
- Â Roulette Player (uncredited) 1 episode, 2008