All 150 actors in both Stargate Atlantis and Stargate SG·1
150 actors have appeared in both Stargate Atlantis and Stargate SG·1, across 313 episodes. The most-credited is Gary Jones, Sgt. Walter Harriman in Stargate Atlantis and Sgt. Walter Harriman in Stargate SG·1.
| Actor | In Stargate Atlantis | In Stargate SG·1 | Eps | Eps |
|---|---|---|---|---|
| Gary Jones | Sgt. Walter Harriman | Sgt. Walter Harriman | 12 | 111 |
| David Nykl | Dr. Radek Zelenka | Dr. Radek Zelenka | 54 | 1 |
| Peter Kufluk | MSgt. Connor | MSgt. Connor | 7 | 93 |
| Kavan Smith | Major Lorne | Major Lorne | 29 | 2 |
| Dan Shea | Sgt. Sylvester Siler | Sgt. Sylvester Siler, MSgt. Sylvester Siler, Fire Fighter | 1 | 60 |
| Bill Dow | Dr. Bill Lee | Dr. Bill Lee | 7 | 20 |
| Paul McGillion | Dr. Carson Beckett | Young Ernest Littlefield | 26 | 1 |
| Christopher Heyerdahl | Wraith Leader (Todd), Halling, Male Wraith | Pallan | 22 | 1 |
| Michael Shanks | Dr. Daniel Jackson | Thor, Dr. Daniel Jackson, Aegir | 3 | 20 |
| Chuck Campbell | Chuck | Atlantis Technician | 40 | 1 |
| Colin Cunningham | Major Paul Davis | Major Paul Davis | 1 | 15 |
| Robert Picardo | Richard Woolsey | Richard Woolsey | 6 | 7 |
| Martin Christopher | Major Marks | Kevin Marks | 5 | 12 |
| Don S. Davis | Lieutenant General George S. Hammond | Lt. Gen. George Hammond | 1 | 7 |
| Richard Dean Anderson | Jack O'Neill | Jack O'Neill | 4 | 4 |
| Torri Higginson | Dr. Elizabeth Weir, Old Weir | Dr. Elizabeth Weir | 5 | 3 |
| Mike Dopud | Kiryk | Jaffa, Colonel Chernovshev, Eurondan Soldier | 1 | 6 |
| Garwin Sanford | Simon Wallis | Narim | 3 | 3 |
| Sean Tyson | Jervis | TSgt. Mecker, Agent Singer, Ori Firstman | 1 | 17 |
| Martin Wood | Largent | Major Wood, Director, Fire Fighter | 1 | 25 |
| Craig Veroni | Dr. Peter Grodin | Weapons Officer | 9 | 1 |
| Kevin McNulty | Chancellor Lycus | Dr. William Warner | 1 | 4 |
| Nickolas Baric | Hester | SSgt. Shandler, Penhall, F-302 Pilot | 1 | 16 |
| Peter Flemming | Agent Malcolm Barrett | Agent Malcolm Barrett | 2 | 6 |
| Dan Payne | Wraith Warrior, Big Wraith, Lt. Reed | Kull Warrior, Jaffa, Super Soldier | 5 | 14 |
| Kirby Morrow | Daedelus Tech, Captain Dave Kleinman | Militia Man, Tara'c | 8 | 2 |
| Chelah Horsdal | Erran | Lt. Womack | 1 | 5 |
| Daniel Bacon | Dr. Watson | SMSgt. Russell Benson | 1 | 8 |
| Trevor Devall | Hermiod | Kvasir, Asgard | 7 | 4 |
| Tyler McClendon | Kenny Wraith, Wraith, Second in Command Wraith | Guard, Lt. Adam Banks, SGC Officer | 6 | 3 |
| Paul Lazenby | Genii Soldier | Jaffa, Prometheus Crew Member, SF Guard | 1 | 10 |
| Loyd Bateman | Soldier | TSgt. Chapman, Free Jaffa, Honduran Rebel | 1 | 12 |
| Alan C. Peterson | Magistrate | The Canon | 1 | 1 |
| Courtenay Stevens | Keras | Lt. Kevin Elliott | 1 | 3 |
| Darren Hird | Cocooned Victim, Dying Patient | Major, Odyssey Crewman, Peters | 2 | 8 |
| Jodelle Ferland | Harmony | Adria (7 yrs) | 1 | 1 |
| Matthew Walker | Moros | Merlin, Roham | 1 | 5 |
| Richard Ian Cox | Dr. Brendan Gaul | Nyan | 1 | 1 |
| Sean Millington | Marine | SSgt. Peterson, Jaffa, Ronac | 2 | 10 |
| Mark Gibbon | Constable | M'zel, Thor | 1 | 4 |
| David McNally | Avrid | Hanno, Simon | 1 | 2 |
| James Chutter | Babbis, Billy Wraith, Bridge Officer Wraith | Airman Clark | 6 | 3 |
| Jay Brazeau | Lord Protector | Harlan | 1 | 2 |
| Johann Helf | Nabel Gohen | Medical Assistant | 2 | 1 |
| Christopher Judge | Teal'c | Quetlzelcoatl, Unas | 2 | 2 |
| Paul Jarrett | Captain Hendricks | SG-5 Member, Special Agent Farrity | 1 | 3 |
| Sean Campbell | Solen Sincha | Sergeant, Solek | 2 | 2 |
| Tamlyn Tomita | Chinese Ambassador Shen Xiaoyi | Shen Xiaoyi | 2 | 2 |
| Christopher Pearce | Marine Williams | Senior Airman Jake Bosworth | 1 | 4 |
| Glenn Ennis | 1st Warrior | Jaffa | 1 | 4 |
| Aaron Craven | Commander Wraith | Capt. Kyle Rogers, Kinsey's worshipper, Matar | 1 | 3 |
| Anna Galvin | Dr. Vanessa Conrad | Dr. Reya Varrick | 1 | 1 |
| Apollonia Vanova | Wraith Queen | Russian Weapons Officer | 1 | 1 |
| Brent Stait | Michael Kenmore | Major Louis Ferretti | 1 | 2 |
| Christian Bocher | Torrell | Raymond Gunne / Dr. Levant, Major Newman | 1 | 3 |
| Christina Cox | Major Anne Teldy | Lt. Kershaw, T'akaya | 1 | 2 |
| Colby Johannson | Lt. Kagan | SF Sergeant Finney | 1 | 1 |
| Colin Corrigan | Guard #2, Team Member | SF Guard, Med Team Leader, Ninja Jaffa Leader | 2 | 4 |
| Dane MacFahden | Wagner | Jaffa, SGC Soldier, USAF Engineer | 1 | 4 |
| Yan-Kay Crystal Lowe | Mardola | Nya | 1 | 1 |
| Morris Chapdelaine | Newborn Wraith | Tenat, Jup, Prior | 1 | 5 |
| Geoff Redknap | Old Colonel Sheppard, Old Colonel Sumner | Jup, Alien Lt. | 2 | 3 |
| David Bloom | Eldred | Scavenger, Spellman | 1 | 2 |
| David Neale | Genii Soldier, Ancient Pilot | Dialer, K'tau Male, Soldier | 3 | 3 |
| Ellie Harvie | Dr. Lindsey Novak | Dr. Lindsey Novak | 2 | 1 |
| John Sampson | Human guard | Refugee, Lucian guard, SG-5 Soldier | 1 | 5 |
| Robert Thurston | Zarah | Scientist | 1 | 2 |
| Brett Chan | Genii Soldier | Jaffa, Netan's guardsman, Ninja Jaffa | 1 | 6 |
| Allison Hossack | Perna | Zenna Valk | 1 | 1 |
| Brandy Ledford | Narina | Zarin | 1 | 1 |
| Laura Mennell | Sanir | Mary | 1 | 1 |
| Matthew Harrison | Scientist #1 | Darian | 1 | 1 |
| Megan Leitch | Captain Helia | Ke'ra | 1 | 1 |
| Robert Moloney | Koracen | Borren | 1 | 1 |
| Shane Meier | Neleus | Garan | 1 | 1 |
| Woody Jeffreys | Bouncer | Guard | 2 | 2 |
| Phoenix Ly | Yamato | SF Guard, F-302 Pilot | 1 | 4 |
| Aleks Paunovic | Rakai | Shaq'rel | 1 | 2 |
| David Lovgren | Kelore | Darrell Grimes, Va'lar | 1 | 2 |
| Lauro Chartrand | Genii Soldier | Jaffa, Driver, Security Team Member | 1 | 5 |
| Paul Anthony | Jace | Slave | 1 | 2 |
| Steve Archer | Generator-Room Guard | Ori Commander | 1 | 2 |
| Sheri Noel | Scientist, Lab Assistant | Physiotherapist | 3 | 1 |
| Adrian Hough | Genii Lieutenant | Gou'ald Lt. | 1 | 1 |
| Christina Jastrzembska | Dr. Weir's Mother | Female Elder | 1 | 1 |
| David Richmond-Peck | Genii Field Captain | Jaffa Commander | 1 | 1 |
| Julie Patzwald | Pelias | Naytha | 1 | 1 |
| Lucia Walters | Lara | Disciple | 1 | 1 |
| Mark Pawson | Collins | Reporter, Secret Service Man | 1 | 2 |
| Neil Jackson | Wraith | Khalek | 1 | 1 |
| Nels Lennarson | Holland | Major Green | 1 | 1 |
| Patrick Gilmore | Genii Soldier | Lt. Bernie Ackerman | 1 | 1 |
| Richard Zeman | Commander Wraith | Lourdes Maylay | 1 | 1 |
| Ryan Booth | Lt. Negley | Zarin's Jaffa | 1 | 1 |
| Sarah Deakins | Renni | Tanis Reynard | 1 | 1 |
| Tobias Slezak | Myrus | Tech Sergeant Dale James | 1 | 2 |
| Todd Scott | Malik | Jaffa, Loder, SF Guard | 1 | 3 |
| Yee Jee Tso | Technician | Left Tech | 2 | 1 |
| Ernest Jackson | Replicator | Jaffa, Sgt. Larson, Villager | 1 | 3 |
| Jay Williams | Adams | Ra, Tok'ra, Yu's Manservant | 1 | 3 |
| Ken Kirzinger | Bartender | Jaffa, Jaffa Commander | 1 | 3 |
| Brahm Taylor | Lathan | Villager | 2 | 1 |
| Kwesi Ameyaw | Tactical Officer | Olokun | 1 | 2 |
| Mark Hoeppner | Bartender | Bar habitué, Medieval villager | 1 | 2 |
| Yurij Kis | Local | Disciple, Yuri | 1 | 2 |
| Brad Dryborough | Lead Hybrid | Outta Control Driver | 1 | 1 |
| Brendan Beiser | Tavius | Weaver | 1 | 1 |
| Conan Graham | New Genii Soldier | NID Agent | 1 | 1 |
| John Shaw | Garth | Dr. Freisen | 1 | 1 |
| Johnny Cuthbert | Fortnum | Agent Devlin | 1 | 1 |
| Jonathan Holmes | Magistrate | Dr. Bricksdale | 1 | 1 |
| Leanne Adachi | Lia | Rebel Aide | 1 | 1 |
| Noah Beggs | Dex | Security Force Officer | 1 | 1 |
| Ona Grauer | Female Ancient | Ayiana | 1 | 1 |
| Aleks Holtz | Guard | Jaffa | 2 | 1 |
| David MacInnis | Talus | Agent Williams | 2 | 1 |
| Kimani Ray Smith | Dr. Lindstrom | Madronan Guardian, Ocker | 1 | 2 |
| Artine Brown | Trader | Jaffa, Park trotter | 1 | 3 |
| Bruce Dawson | Captain | Crewman | 1 | 1 |
| Craig Fraser | Atlantis Security Officer, Pilot | SGC Delegation | 2 | 1 |
| Emy Aneke | Lt. Morrison | Jaffa | 1 | 2 |
| Gina Stockdale | Enid | Maid | 1 | 1 |
| Karin Konoval | Second in Command | Dr. Sandy Van Densen | 1 | 1 |
| Michael Coleman | Front Desk Guy | Med Tech | 1 | 1 |
| Michael Puttonen | Smeadon | Simian | 1 | 1 |
| Panou | Cetus | Lt. Fisher | 2 | 1 |
| Patrick Gallagher | Vonos | Jaffa Commander | 1 | 1 |
| Penelope Corrin | Dr. Lindsay | Dr. Lindsay | 1 | 2 |
| Terence Kelly | Orin | Hagan | 1 | 1 |
| Andrew Moxham | Wallace | Pangar Sentry | 1 | 1 |
| Andy Maton | English Ambassador | Chapman | 1 | 1 |
| Carmen Moore | Reporter | Lab Assistant | 1 | 1 |
| D. Harlan Cutshall | Marine | Jaffa Commander | 1 | 1 |
| Jodie Graham | Genii Soldier | SG-25 Leader | 1 | 1 |
| Michael Chase | Ancient Med Tech | Chief of Staff | 1 | 1 |
| Ryan W. Smith | Crewman | Special Forces Guard | 1 | 1 |
| Todd Hann | Bravo Leader | SF Sergeant Gibson | 1 | 1 |
| Ron Blecker | Goon, Marine | SG-3 Airman | 2 | 1 |
| Adrian Hein | Replicator | Jaffa | 1 | 1 |
| Andrew Hedge | Soldier | Jackson's house security, TSgt. Rosenthal | 1 | 2 |
| Ari Solomon | Billick | President Landry's Bodyguard | 1 | 1 |
| Cory Monteith | Genii Private | Young Mitchell | 1 | 1 |
| James Bamford | Wraith | Eighth | 1 | 1 |
| Nicole Rudell | Doctor | Nurse | 1 | 1 |
| Paul Herbert | Technician | Dancing Classmate | 1 | 1 |
| Jody Thompson | Nurse | Woman | 1 | 1 |
| John Tierney | Astrum | Monk | 1 | 1 |
| Kerry Blouin | Replicator Guard | Trapped adventurer | 1 | 1 |
| Santo Lombardo | Athosian | Bolaa | 1 | 1 |
| Jason Coleman | Larrin's Crewman | Young Daniel | 1 | 1 |
← Stargate Atlantis × Stargate SG·1
Cast data from TVmaze, licensed CC BY-SA 4.0.