All 117 actors in both Psych and Stargate Atlantis
117 actors have appeared in both Psych and Stargate Atlantis, across 219 episodes. The most-credited is David Nykl, Events Coordinator in Psych and Dr. Radek Zelenka in Stargate Atlantis.
| Actor | In Psych | In Stargate Atlantis | Eps | Eps |
|---|---|---|---|---|
| David Nykl | Events Coordinator | Dr. Radek Zelenka | 1 | 54 |
| Christopher Heyerdahl | Long Hair | Wraith Leader (Todd), Halling, Male Wraith | 1 | 22 |
| Craig Veroni | Riley | Dr. Peter Grodin | 1 | 9 |
| Sharon Taylor | Jasmine Richards | Amelia Banks, Replicator Tech, Technician | 1 | 12 |
| Calum Worthy | Malone, Shockley | Hunter Kid | 3 | 1 |
| Chelan Simmons | Bianca | Mara | 2 | 1 |
| Richard Kind | Hugo Rainer | Lucius Lavin | 1 | 2 |
| Ryan Robbins | Vernon Stallings | Ladon Radim | 1 | 5 |
| Ben Cotton | Barlow, Chance Cade | Dr. Kavanagh | 2 | 6 |
| Kate Hewlett | Stacy | Jeannie Miller | 1 | 4 |
| Richard Ian Cox | Desk Clerk Bobby | Dr. Brendan Gaul | 1 | 1 |
| Agam Darshi | Dwyer | Athosian, Novo | 1 | 2 |
| Alan Ruck | Phil Stubbins, Ruben Leonard | Dr. Fletcher | 2 | 1 |
| Patrick Sabongui | Tito | Kanaan, Taliban Guard | 1 | 5 |
| Yan-Kay Crystal Lowe | Daphne, Eden | Mardola | 2 | 1 |
| Donna Soares | Officer | Coleman | 1 | 3 |
| Isaah Brown | Young Gus | Caminous | 5 | 1 |
| Alberto Ghisi | Young Jimmy | Kid | 1 | 1 |
| Aleks Paunovic | Bartender, Security Guard, Serbian #1 | Rakai | 3 | 1 |
| Chelah Horsdal | Beth | Erran | 1 | 1 |
| Don S. Davis | Camden McCallum Sr. | Lieutenant General George S. Hammond | 1 | 1 |
| Doron Bell | DeVry Longsdale | SF | 1 | 1 |
| Dylan Neal | Jann | Dave Sheppard | 1 | 1 |
| Jay Brazeau | Director | Lord Protector | 1 | 1 |
| John Innes | Chief Herb Wilkins | Zaddik | 1 | 1 |
| Pascale Hutton | Katarina McCallum | First Officer | 1 | 1 |
| Richard Zeman | Miklos Prochazka | Commander Wraith | 1 | 1 |
| Shane Meier | Kirk Gödel | Neleus | 1 | 1 |
| Leela Savasta | Nanny | Vega, Esposito | 1 | 3 |
| Ellie Harvie | Lorraine | Dr. Lindsey Novak | 1 | 2 |
| Joseph May | Bruce / Father | Sgt. Markham | 1 | 2 |
| Ken Kirzinger | Bartender, Bob | Bartender | 2 | 1 |
| Robert Patrick | Major General Felts | Colonel Marshall Sumner | 1 | 2 |
| Brent Stait | Randy | Michael Kenmore | 1 | 1 |
| Colin Cunningham | Marvin | Major Paul Davis | 1 | 1 |
| Dexter Bell | Patrolling Officer | Sgt. Barraso | 1 | 1 |
| Ecstasia Sanders | Chelsea Patterson | Villager | 1 | 1 |
| Emma Lahana | Waitress | Ava Dixon | 1 | 1 |
| Matthew Harrison | Daniel Bethel | Scientist #1 | 1 | 1 |
| Sean Tyson | Jake | Jervis | 1 | 1 |
| Sonja Bennett | Annie | Dahlia Radim | 1 | 1 |
| Stephen Dimopoulos | Gelbart | Goran | 1 | 1 |
| William MacDonald | Phil | Captain Hugh Griffin | 1 | 1 |
| Chris Gauthier | Earlie, Juror #3 | Mattas | 2 | 1 |
| Paul Lazenby | Guard, James Earl Vest | Genii Soldier | 2 | 1 |
| Adrian Hough | Moustache Man | Genii Lieutenant | 1 | 1 |
| David Bloom | Nathaniel Gresling | Eldred | 1 | 1 |
| David Richmond-Peck | Detective March | Genii Field Captain | 1 | 1 |
| Jonathan Holmes | Hotel Clerk, Maitre 'D | Magistrate | 2 | 1 |
| Kevin McNulty | Chad Wiswall | Chancellor Lycus | 1 | 1 |
| Nels Lennarson | Moncrief Johnson | Holland | 1 | 1 |
| Nimet Kanji | Mrs. Barenholdt | Dr. Bryce | 1 | 1 |
| Noel Johansen | Theodore "Ted" Meltregger | Dr. Dickenson | 1 | 1 |
| Robert Thurston | Coroner | Zarah | 1 | 1 |
| Scott E. Miller | Adam | Pilot | 1 | 1 |
| Sean Rogerson | Lt. Wallach | Nevik | 1 | 1 |
| Yee Jee Tso | Perry | Technician | 1 | 2 |
| Aleks Holtz | Cameron | Guard | 1 | 2 |
| Daniel Bacon | Corporal Lejsek, Reporter #1 | Dr. Watson | 2 | 1 |
| Richard Stroh | Guard | Genii Soldier | 2 | 1 |
| Anne Openshaw | Brianna Hicks | Pilot | 1 | 1 |
| Brendan Beiser | Color Commentator | Tavius | 1 | 1 |
| Darren Dolynski | Waiter | Mirellus | 1 | 1 |
| David Lovgren | William Wyles IV | Kelore | 1 | 1 |
| John Shaw | Replacement Spellmaster | Garth | 1 | 1 |
| Kyla Anderson | CSI Officer | Marin | 1 | 1 |
| Michelle Brezinski | Jewelry Store Clerk | Nurse | 1 | 1 |
| Nico McEown | Young Bully | Boy | 1 | 1 |
| Noah Beggs | Worker | Dex | 1 | 1 |
| Patrick Gilmore | Patrick | Genii Soldier | 1 | 1 |
| Paul Anthony | Todd | Jace | 1 | 1 |
| Peter Abrams | Spellmaster | Dr. Donaldson | 1 | 1 |
| Rob LaBelle | Frank Holloway | Mr. Coolidge | 1 | 1 |
| Ron Selmour | Darryl | Jannick | 1 | 1 |
| Aaron Craven | Randall Fishbeck | Commander Wraith | 1 | 1 |
| David Milchard | Clerk | SGC Technician | 1 | 1 |
| France Perras | Adina | Nurse | 1 | 1 |
| Gina Stockdale | Poppy | Enid | 1 | 1 |
| Karin Konoval | Pamela | Second in Command | 1 | 1 |
| Kwesi Ameyaw | Detective Ocampo | Tactical Officer | 1 | 1 |
| Michael Coleman | Student #3 | Front Desk Guy | 1 | 1 |
| Michael Puttonen | Sergei Czarsky | Smeadon | 1 | 1 |
| Patrick Gallagher | Mercer | Vonos | 1 | 1 |
| Reese Alexander | Patterson | Major Jordan | 1 | 1 |
| Terence Kelly | Professor Enrico | Orin | 1 | 1 |
| Carmen Moore | Rosa | Reporter | 1 | 1 |
| Jodie Graham | Henry's Partner | Genii Soldier | 1 | 1 |
| John Stewart | Red | Villager | 1 | 1 |
| Lara Gilchrist | Sabrina Vito | Dr. Hewston | 1 | 1 |
| Mark Gash | Restaurant Manager | Doctor | 1 | 1 |
| Michael Chase | Tenant | Ancient Med Tech | 1 | 1 |
| Pearce Visser | Man | Opponent | 1 | 1 |
| Robert Wolfgang Weiss | Detective Breitling | Scientist | 1 | 1 |
| Alana Husband | Natasha | Ennea | 1 | 1 |
| Blaine Anderson | Ryan | Local | 1 | 1 |
| Byron Lucas | Organizer | Replicator | 1 | 1 |
| D. Harlan Cutshall | Gary Mills | Marine | 1 | 1 |
| Dan Joffre | Roland | Barkeep | 1 | 1 |
| G. Michael Gray | Adam George | Sefaris | 1 | 1 |
| Graem Beddoes | Officer Bachynsky | Scientist | 1 | 1 |
| Linden Banks | Lawrence Cross | Dovelock | 1 | 1 |
| Mark Pawson | Cole | Collins | 1 | 1 |
| P.J. Prinsloo | Agent Rupp | Anders | 1 | 1 |
| Peter Grasso | Chef Antonio | Scientist | 1 | 2 |
| Todd Scott | Confederate Soldier | Malik | 1 | 1 |
| John Tierney | Art | Astrum | 1 | 1 |
| Santo Lombardo | Felix | Athosian | 1 | 1 |
| BJ Harrison | Bea Gamble | Female Merchant | 1 | 1 |
| Jason Coleman | Joe | Larrin's Crewman | 1 | 1 |
| Lauro Chartrand | Confederate Soldier | Genii Soldier | 1 | 1 |
| Mark Burgess | Dr. Roger Downs | Sick Guy | 1 | 1 |
| Shaw Madson | EMT | Matthews | 1 | 1 |
| Artine Brown | Officer Koontz | Trader | 1 | 1 |
| Michelle Addison | Woman | Johnson | 1 | 1 |
| Simon Longmore | Bull | Tathal | 1 | 1 |
| Chris Nowland | Reporter #2 | Crime Scene Guy | 1 | 1 |
| Aaron Dudley | Kyle | Male Ancient | 1 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.