- Ben Browder
- Â John Crichton / ... 88 episodes, 1999-2003
- Claudia Black
- Â Officer Aeryn Sun / ... 88 episodes, 1999-2003
- Anthony Simcoe
- Â Ka D'Argo / ... 88 episodes, 1999-2003
- Lani John Tupu
- Â Pilot / ... 88 episodes, 1999-2003
- Jonathan Hardy
- Â Dominar Rygel XVI / ... 86 episodes, 1999-2003
- Gigi Edgley
- Â Chiana / ... 74 episodes, 1999-2003
- Wayne Pygram
- Â Scorpius / ... 61 episodes, 2000-2003
- Virginia Hey
- Â Pa'u Zotoh Zhaan / ... 50 episodes, 1999-2002
- Paul Goddard
- Â Stark 35 episodes, 2000-2003
- Melissa Jaffer
- Â Utu-Noranti Pralatong / ... 24 episodes, 2000-2003
- David Franklin
- Â Lt. Meeklo Braca / ... 24 episodes, 2000-2003
- Raelee Hill
- Â Sikozu Svala Shanti Sugaysi Shanu / ... 22 episodes, 2002-2003
- Tammy Macintosh
- Â Joolushko Tunai Fenta Hovalis 17 episodes, 2001-2002
- Thomas Holesgrove
- Â Cargn / ... 14 episodes, 2000-2002
- Rebecca Riggs
- Â Commandant Mele-On Grayza / ... 10 episodes, 2002-2003
- Kent McCord
- Â Jack Crichton 9 episodes, 1999-2003
- Francesca Buller
- Â Minister Ahkna / ... 8 episodes, 2000-2003
- Matthew Newton
- Â Ka Jothee 6 episodes, 2000-2001
- Linda Cropper
- Â Xhalax Sun / ... 5 episodes, 2000-2001
- Duncan Young
- Â Emperor Staleek / ... 5 episodes, 2002-2003
- Nicholas Hope
- Â Akkor / ... 5 episodes, 2000-2001
- Danny Adcock
- Â Co-Kura Strappa / ... 5 episodes, 2000-2002
- John Adam
- Â Bekhesh / ... 5 episodes, 1999-2003
- Nick McKay
- Â Cargn / ... 5 episodes, 2000-2001
- John Bach
- Â Einstein 1 episode, 2002-2003
- Alyssa-Jane Cook
- Â Gilina Renaez 4 episodes, 1999-2002
- Murray Bartlett
- Â Douglas 'D.K.' Knox / ... 4 episodes, 1999-2003
- Jason Clarke
- Â Captain Jenek / ... 4 episodes, 2003
- Johanna Kerrigan
- Â Linfer / ... 4 episodes, 1999-2001
- Aaron James Cash
- Â Dregon Carzenova / ... 4 episodes, 1999-2000
- Matt Day
- Â Councilor Tyno 3 episodes, 2000
- Magda Szubanski
- Â Furlow 3 episodes, 1999-2001
- Sandy Gore
- Â Nurse Vreena / ... 3 episodes, 2000-2003
- Jeremy Sims
- Â Rorf 3 episodes, 1999-2000
- Claudia Karvan
- Â Natira 3 episodes, 2000
- Tina Bursill
- Â Empress Novia 3 episodes, 2000
- Felix Williamson
- Â Prince Clavor 3 episodes, 2000
- David Wheeler
- Â Captain Selto Durka 3 episodes, 1999-2000
- Felicity Price
- Â Princess Katralla 3 episodes, 2000
- Dinah Shearing
- Â Elack's Pilot 3 episodes, 2002
- Bianca Roe
- Â Jenavian Charto 3 episodes, 2000
- Jennifer Fisher
- Â PK Nurse 3 episodes, 2000
- Jason Chong
- Â General Rahzaro / ... 3 episodes, 2002-2003
- Phillip Hinton
- Â Teurac 3 episodes, 1999-2000
- Jonny Pasvolsky
- Â Pennoch 3 episodes, 2003
- David Bowers
- Â Kurz 3 episodes, 1999-2000
- Amy Salas
- Â Skreeth / ... 3 episodes, 2001-2003
- Christine Stephen-Daly
- Â Lt. Teeg / ... 2 episodes, 1999-2000
- Gavin Robins
- Â Cargn / ... 2 episodes, 2000
- Joshua Anderson
- Â Bobby / ... 1 episode, 2003
- John Schwarz
- Â Tugar / ... 1 episode, 2002-2003
- Chris Haywood
- Â Sorcerer Maldis / ... 2 episodes, 1999-2000
- Angie Milliken
- Â Volmae / ... 2 episodes, 1999-2000
- John Brumpton
- Â B'Sogg / ... 2 episodes, 2000-2003
- Hugh Keays-Byrne
- Â Grunchlk 2 episodes, 2000-2001
- Grant Magee
- Â Jothee 2 episodes, 1999
- Anthony Hayes
- Â Molnon / ... 2 episodes, 2000-2002
- Dominique Sweeny
- Â Kek / ... 2 episodes, 2000-2001
- Shane Briant
- Â Dr. Trayso Talnell / ... 2 episodes, 2001-2003
- Selina Muller
- Â D'Argo's Girlfriend / ... 2 episodes, 1999
- Carmen Duncan
- Â Leslie Crichton 2 episodes, 2000-2002
- Victoria Longley
- Â Neeyala 2 episodes, 2001
- Imogen Annesley
- Â Niem 2 episodes, 2000
- Tyler Coppin
- Â Robert Schelmacher / ... 2 episodes, 2002-2003
- Marta Dusseldorp
- Â Officer Yal Henta 2 episodes, 2002
- Steve Le Marquand
- Â Oo-Nii 2 episodes, 2002
- Richard Carter
- Â Kabaah / ... 2 episodes, 2001-2002
- Anthony Kierann
- Â Lieutenant Heskon 2 episodes, 2000
- Patrick Ward
- Â Ralnaht / ... 2 episodes, 2001-2003
- Sarah Enright
- Â Olivia Crichton 2 episodes, 2003
- Lenore Smith
- Â Lt. Darinta Larell 2 episodes, 2002
- Dwayne Fernandez
- Â Cresto 2 episodes, 2001
- Hunter Perske
- Â Bloy / ... 2 episodes, 2000-2001
- Kerith Atkinson
- Â Shreena 2 episodes, 2001
- Brian Carbee
- Â Lastren 2 episodes, 2001
- Nicholas Hammond
- Â Dr. Adrian Walker 2 episodes, 2003
- Paul Shedlowich
- Â Plint 2 episodes, 2001-2002
- Erika Heynatz
- Â Caroline Wallace 2 episodes, 2002-2003
- Katherine Thomas
- Â Laura Kopecki 2 episodes, 2002-2003
- David Downer
- Â Secretary Vakali 2 episodes, 2003
- Dean O'Gorman
- Â Zukash 2 episodes, 2003
- Linal Haft
- Â Zelkin 2 episodes, 2000
- Darlene Vogel
- Â Alex / ... 1 episode, 1999-2003
- Wadih Dona
- Â Tauvo Crais 1 episode, 1999-2000
- Christian Bischoff
- Â Bixx 1 episode, 2000
- Gerry Day
- Â Capt. Crais' Father / ... 1 episode, 1999-2000
- Natalie Mendoza
- Â Lishala 1 episode, 1999
- Mary Mara
- Â Lyneea 1 episode, 1999
- Rhys Muldoon
- Â Staanz 1 episode, 1999
- Paul Leyden
- Â Captain Larraq 1 episode, 1999
- Damian de Montemas
- Â Lieutenant Melkor 1 episode, 1999
- Kate Raison
- Â Pa'u Tahleen 1 episode, 1999
- John Clayton
- Â Verell 1 episode, 1999
- Adrian Getley
- Â Nam Tar 1 episode, 1999
- Alison Fox
- Â Lo'Laan 1 episode, 1999
- Max Phipps
- Â Pa'u Tuzak 1 episode, 1999
- Lisa Hensley
- Â Matala 1 episode, 1999
- John Batchelor
- Â Kcrackic 1 episode, 1999
- Kevin Copeland
- Â Rokon 1 episode, 1999
- Jeremiah Dupre
- Â Kyr 1 episode, 1999
- Tina Thomsen
- Â Tanga 1 episode, 1999
- Jodie Dry
- Â Kyona 1 episode, 1999
- Phillip Gordon
- Â Ray Wilson 1 episode, 1999
- Cayde Tasker
- Â Fostro 1 episode, 1999
- Sarah Burns
- Â Kornata 1 episode, 1999
- Richard White
- Â Thonn 1 episode, 1999
- Peter Astridge
- Â Lomus 1 episode, 1999
- Alex Dimitriades
- Â Lieutenant Velorek 1 episode, 2000
- Malcolm Kennard
- Â Meelak 1 episode, 2000
- Steven Jacobs
- Â Jar Rouin 1 episode, 2000
- Grant Bowler
- Â Shaman Liko 1 episode, 1999
- Tiriel Mora
- Â Salis 1 episode, 1999
- Ken Blackburn
- Â Hybin 1 episode, 1999
- Boris Brkic
- Â Ryymax 1 episode, 1999
- Zoe Coyle
- Â Hassan 1 episode, 1999
- Richard Sydenham
- Â Cobb 1 episode, 1999
- John O'Brien
- Â Kato-Re 1 episode, 1999
- Peter Knowles
- Â Evran 1 episode, 1999
- Zoe Dimakis
- Â Hontovek 1 episode, 1999
- Anna Lise Phillips
- Â Young Nilaam 1 episode, 2000
- Skye Wansey
- Â Varla 1 episode, 2000
- Michela Noonan
- Â Vyna 1 episode, 2000
- Justine Saunders
- Â Altana 1 episode, 2000
- Peter Whittle
- Â Ilkog 1 episode, 2002
- Deni Gordon
- Â Priestain Neera 1 episode, 1999
- June Salter
- Â Dimensional Being 1 episode, 1999
- Michael Tuahine
- Â Rhed 1 episode, 1999
- Michael Beckley
- Â Hasko 1 episode, 1999
- Mark Shaw
- Â Alien Soldier #1 1 episode, 1999
- Api Bavardra
- Â Captain Nonk 1 episode, 1999
- Greg Blandy
- Â Peacekeeper Guard #1 1 episode, 1999
- Matthew Le Nevez
- Â Caveman Crichton 1 episode, 2000
- Alyson Standen
- Â Ennixx 1 episode, 2000
- Peter Kowitz
- Â Tarr 1 episode, 2000
- Simon Bossell
- Â Nerri 1 episode, 2000
- Bruce Spence
- Â Prefect Falaak 1 episode, 2002
- Barry Otto
- Â Dr. Tumii 1 episode, 2002
- Nick Tate
- Â R. Wilson Munroe 1 episode, 2003
- Paula Arundell
- Â Talikaa 1 episode, 2003
- Blair Venn
- Â Macton 1 episode, 2003
- Julian Garner
- Â Nam Tar 1 episode, 1999
- Jake Blundell
- Â Lieutenant Om 1 episode, 1999
- Tania Yuki
- Â Maid 1 episode, 1999
- Frankie Davidson
- Â Newsstand Guy 1 episode, 1999
- Colin Borgonon
- Â Peacekeeper Weapons Officer 1 episode, 1999
- Dominic Bianco
- Â Alien Hunter #2 1 episode, 1999
- Mark Slocum
- Â Sykaran Male 1 episode, 1999
- Marton Csokas
- Â Br'Nee 1 episode, 2000
- Peter Carroll
- Â Gahv 1 episode, 2000
- Jeremy Callaghan
- Â Bartender 1 episode, 2000
- Virginia Weule
- Â Vorc 1 episode, 2000
- Rebecca Gibney
- Â Rinic Sarova 1 episode, 2001
- Kate Beahan
- Â Hubero 1 episode, 2001
- Dan Spielman
- Â Sub-Officer Dacon 1 episode, 2001
- John Gregg
- Â Talyn Lyczac 1 episode, 2001
- Susan Lyons
- Â Sierjna 1 episode, 2001
- Ben Mendelsohn
- Â Sko 1 episode, 2002
- David Field
- Â Ho'Ock 1 episode, 2002
- Jack Finsterer
- Â Gleeg 1 episode, 2002
- Ivar Kants
- Â Gaashah 1 episode, 2002
- Sacha Horler
- Â Prisoner Morrock 1 episode, 2003
- Chris Pitman
- Â Trader 1 episode, 2003
- Heath Wilder
- Â Alien Hunter #3 1 episode, 1999
- Albert Mensah
- Â Dialectic 1 episode, 1999
- Peter Baroch
- Â Sykaran Male 1 episode, 1999
- Rob Carlton
- Â Vija 1 episode, 2000
- Peter Scarf
- Â Das 1 episode, 2000
- Marin Mimica
- Â Maton Dersch 1 episode, 2000
- Ian Bliss
- Â PK Scientist Drillic 1 episode, 2001
- Matt Doran
- Â Markir Tal 1 episode, 2001
- Leeanna Walsman
- Â Borlik 1 episode, 2001
- Lucy Bell
- Â Nurse Kelsa 1 episode, 2001
- Mark Mitchell
- Â Mu-Quillus 1 episode, 2001
- Tamblyn Lord
- Â Fe'Tor 1 episode, 2001
- Lisa Griffiths
- Â Belima 1 episode, 2001
- Robert Bruning
- Â Rinic Bralanoth 1 episode, 2001
- Raj Ryan
- Â Hotel Owner 1 episode, 2001
- Evan Sheaves
- Â Child Scorpius 1 episode, 2001
- Peter Whitford
- Â Jabula Clan Chieftain 1 episode, 2002
- Sara Groen
- Â Mujombre 1 episode, 2002
- Rachel Gordon
- Â Lo'Laan 1 episode, 2003
- Walter Grkovic
- Â Outurak 1 episode, 2003
- Vic Rooney
- Â Admiral Josbek 1 episode, 1999
- Tim Mieville
- Â Jotheb 1 episode, 1999
- Andy Cachia
- Â Technician 1 episode, 1999
- Robert Supple
- Â Young Crichton 1 episode, 1999
- Damen Stephenson
- Â Bio Isolation Man #1 1 episode, 1999
- Simone Kessell
- Â Finzzi 1 episode, 2000
- Natasha Beaumont
- Â Jannix 1 episode, 2000
- Stephen Leeder
- Â Commander Tollona Javio 1 episode, 2000
- Marshall Napier
- Â General Grynes 1 episode, 2001
- Sandy Winton
- Â Rinic Tolven 1 episode, 2001
- Ray Anthony
- Â Alcar 1 episode, 2001
- Laura Keneally
- Â Theladh 1 episode, 2001
- Inge Hornstra
- Â Essk 1 episode, 2002
- Sean Taylor
- Â Lt. Reljik 1 episode, 2002
- Brett Stiller
- Â Zerbat 1 episode, 2002
- Rowan Woods
- Â Male Zhaan 1 episode, 2002
- Bob Nisevic
- Â Nukana 1 episode, 2002
- Lawrence Woodward
- Â Bio Isolation Man #2 1 episode, 1999
- Errol Henderson
- Â PK Doctor 1 episode, 1999
- Terry Serio
- Â Colonel Lennok 1 episode, 2001
- Noel Hodda
- Â Charrid Leader 1 episode, 2001
- Anthony Martin
- Â Mitols 1 episode, 2001
- Sean Masterson
- Â Rovhu Pilot 1 episode, 2001
- Mario Houlavas
- Â Seer 1 episode, 2001
- Elizabeth Alexander
- Â Vella 1 episode, 2002
- Salvatore Coco
- Â Voodi 1 episode, 2002
- Jamie Croft
- Â 'Young' John Crichton 1 episode, 2002
- Mark McCann
- Â Grudek #1 1 episode, 2002
- Alan Flower
- Â Frool 1 episode, 2002
- Samantha Wellington
- Â Woman Behind Counter 1 episode, 2002
- Lee Jay Klomp
- Â Coreeshi 1 episode, 2002
- Geoff Morrell
- Â T.R. Holt 1 episode, 2003
- Louise Crawford
- Â Second Prisoner 1 episode, 2003
- Christopher Truswell
- Â Evran 1 episode, 1999
- Karen Jacobson
- Â Loud speaker 1 episode, 1999
- Basia A'Hern
- Â Cyntrina 1 episode, 2001
- Alexandra Fowler
- Â Orrhn 1 episode, 2001
- Aaron Catalan
- Â Officer Kobrin 1 episode, 2001
- Jessica Fallico
- Â Alien Girl 1 episode, 2001
- Steven Bowers
- Â Beggar 1 episode, 2001
- Anja Coleby
- Â Ponara 1 episode, 2002
- Kelly Butler
- Â Selva 1 episode, 2002
- Ross Newton
- Â Sloggard 1 episode, 2002
- Jacob Vanderpuije
- Â Boy #1 1 episode, 2002
- Ashley Fairfield
- Â Coreeshi 1 episode, 2002
- Mike Duncan
- Â Assassination Victim 1 episode, 2003
- Rel Hunt
- Â Karohm 1 episode, 2003
- Duane Johnston
- Â Young Bialar Crais 1 episode, 1999
- Dean Nottle
- Â Policeman 1 episode, 2000
- Stephany Jacobsen
- Â Nurse Froy 1 episode, 2001
- Tux Akindoyeni
- Â PK Pilot Rinon 1 episode, 2001
- Julieanne Newbould
- Â Felor 1 episode, 2001
- Arthur Percival
- Â Interon Cryoman 1 episode, 2001
- Milan Keyser
- Â Sarl 1 episode, 2001
- Nadia Townsend
- Â Kim Kupperstein 1 episode, 2002
- Lewis Fitz-Gerald
- Â Kor Tosko 1 episode, 2002
- Teo Gebert
- Â Weldon 1 episode, 2002
- Christopher Mayer
- Â Mekken 1 episode, 2002
- Damion Hunter
- Â Rinlo 1 episode, 2002
- Sheridan Rynne
- Â Brenna 1 episode, 2002
- Dion Bilios
- Â Boy #2 1 episode, 2002
- Peter Lamb
- Â Rekka 1 episode, 2003
- Michael Barnacoat
- Â Ivan Chanderpaul 1 episode, 2003
- Leilani Johnson
- Â Young Girl 1 episode, 1999
- Adrian Brown
- Â Gan 1 episode, 2000
- Jessica Wilcox
- Â Prison Guard 1 episode, 2000
- Alan Cinis
- Â Officer Tarn 1 episode, 2001
- Jaye Paul
- Â Heska Tinaco 1 episode, 2001
- Susan Prior
- Â Kiryah 1 episode, 2002
- Ross Sharp
- Â Scorpius Aide 1 episode, 2002
- Christina Ramon
- Â Belly Dancer 1 episode, 2002
- Shardyn Fahey Leigh
- Â Boy 1 episode, 2002
- Ben Dalton
- Â Zepa 1 episode, 2003
- Leo Christopher
- Â Major Gen. Stephen Walcott 1 episode, 2003
- Peter Fenton
- Â Negotiator 1 episode, 2003
- Anne-Marie Kreller
- Â Nurse 1 episode, 2001
- Kim De Lury
- Â Tarnat 1 episode, 2002
- Terrence Hepburn
- Â Armak 1 episode, 2002
- Gitanjali Seymour
- Â Village Woman 1 episode, 2002
- Olivia Pigeot
- Â Marella 1 episode, 2003
- Dee Donavan
- Â Dr. Jason Fletcher 1 episode, 2003
- Rose Klemp
- Â Crichton's Daughter 1 episode, 2000
- Samantha Healy
- Â Rylani Jeema Dellos 1 episode, 2001
- Casey Burgess
- Â Olivia Crichton 1 episode, 2002
- Mark Mercedes
- Â Officer Vonk 1 episode, 2002
- Paula Iland
- Â Receptionist 1 episode, 2003
- John Clardidge
- Â Assassin 1 episode, 2000
- Nic Bishop
- Â Ghebb Dellos 1 episode, 2001
- Louise Fox
- Â Dot Levy 1 episode, 2002
- William Zappa
- Â Captain Molayne 1 episode, 2001
- Royston Innes
- Â PK Doctor 1 episode, 2002
- Kosta Doukas
- Â Deputy 1 episode, 2002
- Nick Frisina
- Â Medic 1 episode, 2002
- Alexander Butt
- Â Alien Boy 1 episode, 2001
- Tony Naumovski
- Â Alien / ... (uncredited) 2 episodes, 2002
- Sam Bettison
- Â Grek (uncredited) 2 episodes, 2003
- Kate Kendall
- Â Sergeant (uncredited) 1 episode, 1999
- Britt Allen
- Â Dancer (uncredited) 1 episode, 1999
- Sandi Finlay
- Â Escort Alien (uncredited) 1 episode, 1999
- Paul J. Mailath
- Â Mechanic (uncredited) 1 episode, 1999
- Tai Scrivener
- Â PK Commando #5 (uncredited) 1 episode, 1999
- Maurice Morgan
- Â Acquarian Warrior (uncredited) 1 episode, 1999
- Derek Amer
- Â Teurac (uncredited) 1 episode, 1999
- Chenoeh Miller
- Â PK Commando #4 (uncredited) 1 episode, 1999
- Geoff Barker
- Â PK Commando #3 (uncredited) 1 episode, 1999
- Pete Walters
- Â Crais' Guard (uncredited) 1 episode, 2000
- Stephen Shanahan
- Â Tenek (uncredited) 1 episode, 2001
- David Lucas
- Â Cryoman (uncredited) 1 episode, 2001
- Mick Roughan
- Â Airek (uncredited) 1 episode, 2002
- Brian Henson
- Â Dr. Edmund Johnston (uncredited) 1 episode, 2003
- Kath Perry
- Â Capt. Jennifer Risalto (uncredited) 1 episode, 2003