All 236 actors in both Stargate SG·1 and The X-Files
236 actors have appeared in both Stargate SG·1 and The X-Files, across 431 episodes. The most-credited is Teryl Rothery, Dr. Janet Fraiser, Heimdall in Stargate SG·1 and Nurse Michelle Charters in The X-Files.
| Actor | In Stargate SG·1 | In The X-Files | Eps | Eps |
|---|---|---|---|---|
| Teryl Rothery | Dr. Janet Fraiser, Heimdall | Nurse Michelle Charters | 75 | 1 |
| William B. Davis | Prior Damaris | Cigarette-Smoking Man | 2 | 44 |
| Dan Shea | Sgt. Sylvester Siler, MSgt. Sylvester Siler, Fire Fighter | Deputy | 60 | 1 |
| Bill Dow | Dr. Bill Lee | Dr. Charles Burks, Dad, Dr. Rick Newton | 20 | 9 |
| Tony Amendola | Master Bra'tac | Cigarette Smoking Pontiff | 26 | 1 |
| Peter Williams | Apophis | Jackson | 20 | 1 |
| Eric Breker | Albert Reynolds | Dark-Suited Man #1, Admitting Officer, SP Agent Brem | 16 | 4 |
| Bruce Harwood | Dr. Osbourne | John Fitzgerald Byers | 1 | 38 |
| Colin Cunningham | Major Paul Davis | Dr. Henry Stroman, Escalante, Lt. Terry Wilmer | 15 | 3 |
| Chris Owens | Armin Selig | Special Agent Jeffrey Spender, Young Cigarette-Smoking Man, Mutato | 1 | 15 |
| Steven Williams | Lt. Gen. Maurice Vidrine | Mr. X | 3 | 13 |
| Tom McBeath | Col. Harry Maybourne | Detective Gwynn, Dr. Lewton, Scientist | 11 | 3 |
| Brendan Beiser | Weaver | Agent Sean Pendrell | 1 | 10 |
| Don S. Davis | Lt. Gen. George Hammond | Captain William Scully | 7 | 2 |
| Laara Sadiq | Technician Laura Davis | Female E.M.T. | 14 | 1 |
| Kevin McNulty | Dr. William Warner | Agent Fuller, Dr. Christopher Davey | 4 | 3 |
| Rob Lee | Major Ben Pierce | Amputee | 6 | 1 |
| Roger Cross | Laurence Conner | Field Agent, Officer Wentworth, Private Kittel | 2 | 4 |
| Garry Chalk | Col. Chekhov | Mad Dog | 10 | 1 |
| Douglas Arthurs | Heru'ur, Kah'l | Skin-Head Man | 4 | 1 |
| Willie Garson | Martin Lloyd | Henry Weems, Quinton 'Roach' Freely | 3 | 2 |
| Adam Baldwin | Col. Dave Dixon | Knowle Rohrer | 2 | 6 |
| Gillian Barber | Ambassador Dreylock, Resident #1 | Penny Northern, Agent Jane Spiller, Beth Kane | 4 | 4 |
| Jay Acovone | Charles Kawalsky | Duffy Haskell, Det. Joe Curtis | 5 | 3 |
| Karin Konoval | Dr. Sandy Van Densen | Little Chucky Poundstone, Little Judy Poundstone, Madame Zelma | 1 | 3 |
| Matthew Glave | Col. Paul Emerson | FBI Prosecutor Kalembrenner | 6 | 2 |
| Michael Kopsa | Gen. Michael Kerrigan, News Anchor | Rick Culver | 3 | 1 |
| Ron Halder | Cronus | Dr. Floyd Fazio | 3 | 1 |
| Timothy Webber | Cmdr. Gareth | Detective Talbot, Dr. Paul Farraday, Jess Harold | 1 | 3 |
| Mitchell Kosterman | Col. Tom Rundell, Special Agent James Hamner | Detective Horton, Fornier, Sheriff | 3 | 4 |
| Peter Flemming | Agent Malcolm Barrett | Officer #1 | 6 | 1 |
| Alan C. Peterson | The Canon | Mr. Y | 1 | 2 |
| Brian Markinson | Lotan | Gary Lambert, Tony Fiore | 1 | 2 |
| David Palffy | Anubis, Sokar | Dark Man | 10 | 2 |
| Robert Wisden | Bert Samuels | Robert Patrick Modell aka Pusher | 4 | 2 |
| Steve Makaj | Col. Robert F. Makepeace | Scott Ostelhoff, Frank Kiveat, Patrolman | 5 | 4 |
| Doug Abrahams | Prior, Cmdr. Hale | Agent #2, Detective Neary, Farbaugh | 6 | 5 |
| Steve Bacic | Camulus, Major Coburn | Agent Collins, Officer #2, S.W.A.T. Commander | 5 | 3 |
| Hrothgar Mathews | Dr. Duncan Hamilton | Creighton Jones, Galen Muntz, Jack | 1 | 4 |
| Robin Mossley | Dr. Reimer, Malikai | Dr. Joe Ridley, Dr. Kingsley Looker, Dr. Vance Randolph | 2 | 3 |
| Guyle Fraizer | SF Guard, Technician #2, Netu denizen | Barney, Officer | 5 | 2 |
| Jeff Gulka | Charlie | Gibson Praise | 1 | 6 |
| Matthew Walker | Merlin, Roham | Arlinsky, Dr. Ronald Surnow | 5 | 2 |
| Andrew Airlie | Dr. Carmichael, Kalan | Attorney, Rob | 2 | 2 |
| Bobbie Phillips | Kynthia | Dr. Bambi Berenbaum | 1 | 1 |
| Colin Lawrence | Major Carl Warren, Major Lawrence | Cop #1 | 5 | 1 |
| Erick Avari | Kasuf | Dr. Herb Fountain | 3 | 1 |
| Ian Tracey | Smith | Sergeant Leonard 'Rappo' Trimble | 1 | 1 |
| Jay Brazeau | Harlan | Dr. Daly, Professor Varnes | 2 | 2 |
| Jerry Wasserman | Bernie Whitlow, Stan | Dr. John Grago, Dr. Plith | 2 | 2 |
| Katharine Isabelle | Valencia | Lisa Baiocchi | 1 | 1 |
| Matthew Bennett | Jared Kane, Ted | Workman | 3 | 1 |
| Gardiner Millar | Yat'yir | Eugene Baiocchi, Man in Suit | 5 | 2 |
| Neil Denis | Rya'c | Catcher | 6 | 1 |
| Gerard Plunkett | High Councilor Tuplo, Nem | Dr. Calderon | 3 | 2 |
| Mark Gibbon | M'zel, Thor | Guard | 4 | 1 |
| Megan Leitch | Ke'ra | Samantha Mulder | 1 | 4 |
| Paul Jarrett | SG-5 Member, Special Agent Farrity | James Earl Ray, Upshaw | 3 | 2 |
| Peter LaCroix | Ashrak, Kendrick | Dwight, Nathaniel Teager | 3 | 2 |
| Robert Lewis | Dr. Peter Tanner | Officer, E.R. Doctor | 2 | 3 |
| William Devane | President Henry Hayes | General Mark A. Suveg | 3 | 2 |
| Dean Redman | Lt. Woeste, SF Guard, Fire Fighter | Police Officer | 10 | 1 |
| Alex Diakun | Tarek Solamon | Buddy / Devil, Curator, Dr. Fingers | 1 | 5 |
| Blu Mankuma | Sheriff Knox | Claude Peterson, Det. Pennock | 1 | 2 |
| Elisabeth Rosen | Jennifer Hailey | Katie | 2 | 1 |
| Lachlan Murdoch | Tomin | Boy in Car, Right Fielder | 1 | 2 |
| Malcolm Stewart | Dollen | Dr. Sacks, Agent Bonnecaze, Commander Carver | 1 | 5 |
| Peter Kelamis | Coyle Boron, Dr. Brent Langham | Assistant D.A. Daniel Costa, Husband #2, Lieutenant Foyle | 2 | 4 |
| Peter Stebbings | Malek | Marty | 2 | 1 |
| Tamsin Kelsey | Gairwyn | Ellen | 2 | 1 |
| Tom O'Brien | Brian Vogler | Corporal Frish | 1 | 2 |
| Greg Anderson | Prior, Administrator, Webber | Photographer | 6 | 1 |
| Raoul Ganeev | Camelot pedestrian, Lt. Col. Sergei Evanov, Rand Soldier | Dmitri, Guard | 5 | 2 |
| Alessandro Juliani | Katep, Eliam | Joseph Cutler | 3 | 1 |
| Colleen Winton | Dr. Greene, National Security Advisor | Lie Detector Technician, Therapist | 2 | 2 |
| George Touliatos | Pyrus, Shamda | Dr. Katz, Larry Winter | 2 | 2 |
| Marie Stillin | High Chancellor Travell | Dr. Sally Sanford | 3 | 1 |
| Marilyn Chin | Clanswoman, Goa'uld, Jaffa | Mrs. Shima-Tsuno | 3 | 1 |
| Norma Wick | Reporter | Reporter, Newscaster | 1 | 3 |
| Tony Todd | Lord Haikon | Augustus Cole | 3 | 1 |
| Veena Sood | Abydonian Leader, Dr. Kelly | Dr. Louise Colquitt, Mrs. Saunders | 2 | 2 |
| Brent Stait | Major Louis Ferretti | Timothy Mayhew, Corp. Taylor | 2 | 3 |
| Chilton Crane | Sheila Jameson | Sharon Graffia, Margaret Hohman, Mother at Bus Station | 1 | 4 |
| David Lewis | Cameron Balinsky | Vosberg, Young Agent, Young Officer | 2 | 3 |
| Glynis Davies | Ambassador Noor, Catherine Langford | Ellen, Monica Landis, Nelson | 2 | 3 |
| Michael David Simms | Secretary of Defense Arthur Simms | Senior FBI Agent | 1 | 5 |
| Mike Dopud | Jaffa, Colonel Chernovshev, Eurondan Soldier | Mr. Y's Henchman | 6 | 1 |
| Brad Loree | Jaffa, Calder's Bodyguard | Fireman, Security Guard | 6 | 2 |
| Adrian G. Griffiths | Lt. Matthew Baker, Paul | Sherman Peacock | 2 | 1 |
| Alvin Sanders | Fred | Bus Driver, Deputy Wright | 1 | 2 |
| Bill Croft | Sindar, The Carrier | Calusari #2, Comrade Svo | 2 | 2 |
| Daryl Shuttleworth | Cmdr. Rigar, Cmdr. Tegar | Daryl Landry | 2 | 1 |
| Don Thompson | Props Guy, U'kin | Henry Willig, Holtzman, Lieutenant Colonel Victor Stans | 2 | 3 |
| Eric Keenleyside | Bret | Lance Kernof | 1 | 1 |
| Gabrielle Miller | Thetys | Brenda J. Summerfield, Paula Gray | 1 | 2 |
| Hiro Kanagawa | Mr. Wayne | Dr. Yonechi, Garner, Peter Tanaka | 1 | 3 |
| Jan Rubeš | Dr. Nicholas "Nick" Ballard | Vassily Peskow | 1 | 1 |
| Jason Gray-Stanford | Orner | Officer Eggers | 1 | 1 |
| Jason Schombing | Dr. Robert Rothman | Warren James Dupre | 3 | 1 |
| John DeSantis | Jaffa | Band-Aid Nose Man | 1 | 1 |
| John Prosky | Malchus | Medical Examiner | 1 | 1 |
| Kimberly Unger | Infirmary Nurse | Joan Gauthier, Karen Koretz | 2 | 2 |
| Lesley Ewen | Scientist | Agent #1, Carina Maywald, Receptionist | 1 | 4 |
| Mar Andersons | Bob, Air Force Official | Halverson, Jack Hammond | 3 | 2 |
| Mark Holden | Korra | Agent Eugene Chandler | 1 | 1 |
| Michael Dobson | Jaffa | BATF Agent, Marksman #2, Sargeant Hynek | 1 | 4 |
| Michael Puttonen | Simian | Conductor, Dr. Pilsson, Martin Allpert | 1 | 4 |
| Michael Welch | Young Jack | Trevor | 1 | 1 |
| Rob Fournier | Airman Mansfield, East German Guard, MALP Gunner | Gunner | 4 | 1 |
| Ron Canada | Quartus | Franklin Potter | 1 | 1 |
| Scott MacDonald | Golen Jarlath | Curtis Delario | 1 | 1 |
| Sebastian Spence | Delek | Deputy Barney Paster | 1 | 1 |
| Tobin Bell | Omoc | Daryl Weaver | 1 | 1 |
| Tom Butler | Major General Trofsky | Benjamin Drake, CIA Agent Ambrose Chapel | 2 | 2 |
| Zak Santiago | Rogelio Duran | Mr. Green | 2 | 2 |
| Andrew Johnston | Doctor | Agent Barry Weiss, Lt. Col. Robert Budahas, Medical Examiner | 1 | 4 |
| Dmitry Chepovetsky | Boris, Russian Soldier | Government Man #1, Lt. Richard Harper, Supervisor | 2 | 3 |
| Ian Robison | Frank, Mitchell's Father, Security Officer | Detective Smith, Ranger | 3 | 2 |
| Michael Rogers | Col. John Michaels, Col. Richard Kendrick, Major Escher | Crewman #1, Lt. Griffin | 3 | 2 |
| Roger Haskett | Doctor, Dr. Bill Thompson | Coroner, Deputy Tyson | 3 | 2 |
| Barry W. Levy | Major Gil Hawkins | Vitagliano, Navy Doctor | 1 | 3 |
| David Hurtubise | Dr. Kleinhouse, Tomis Lee | Barrington, Pathologist | 2 | 2 |
| Dean Aylesworth | Old Anubis | Young Bill Mulder | 1 | 3 |
| Ken Kirzinger | Jaffa, Jaffa Commander | Richter | 3 | 1 |
| Lorena Gale | Curator | Attorney, Ellen Bledsoe, Nurse Wilkins | 1 | 3 |
| Peter Bryant | Hoskins, Fro'tak | Uniformed Cop | 3 | 1 |
| Stuart O'Connell | Marine, Tommy Levinson | Cop #1, S.W.A.T. Cop #1 | 2 | 2 |
| Bob Dawson | Bynarr | Phil Rich | 2 | 1 |
| David Cameron | Elder | Deputy, Young Scientist | 1 | 2 |
| Harrison Coe | Alekos | Dave the Butcher, Issac Luria | 1 | 2 |
| Jill Teed | Yolanda Reese / Major Stacy Monroe | Glenna | 2 | 1 |
| John Sampson | Refugee, Lucian guard, SG-5 Soldier | Marksman #1 | 5 | 1 |
| Joy Coghill | Selmak | Linda Thibedeaux | 2 | 1 |
| Norman Armour | Dr. Douglas MacLaren | Coroner, E.R. Doctor | 1 | 2 |
| Ben Wilkinson | O'Brien | Dean Cavalier | 1 | 1 |
| Chris Shields | Capt. Mike Shefield | Detective Dross | 1 | 1 |
| Fulvio Cecere | Col. Davidson | Aide, Priest | 2 | 2 |
| J.B. Bivens | Guard #1 | Field Agent, Sharpshooter, Truck Driver | 1 | 3 |
| James Parks | Pharrin | Agent Terry Sullivan | 1 | 1 |
| Jody Racicot | Vernon Sharpe | Father Gregory | 1 | 1 |
| John Aylward | President Nadal | Dr. John Rietz | 1 | 1 |
| Julian D. Christopher | Counselor Vin Eremal | Dr. Oscar Griffiths | 1 | 1 |
| Nancy Sorel | Garan | Captain Janet Draper | 1 | 1 |
| Russell Ferrier | Major Michael Griff | Medic | 3 | 1 |
| Scott Hylands | Dr. Timothy Harlow | General Benjamin Bloch | 1 | 1 |
| Thomas Kopache | Ellori | General Thomas Callahan | 1 | 1 |
| Don MacKay | Committee Member #2 | Charlie, Judge, Oates | 1 | 4 |
| Aaron Douglas | Jaffa, Moac | Lindquist | 2 | 1 |
| Allan Lysell | Del Tynan | Abe Gardner, Chief Rivers | 1 | 2 |
| D. Neil Mark | Frakes | Deputy Scott Kerber, SWAT Team Officer | 1 | 2 |
| David Bloom | Scavenger, Spellman | Stress Man | 2 | 1 |
| David Lovgren | Darrell Grimes, Va'lar | Kurt Crawford | 2 | 1 |
| Frank Roman | Rafael | Domingo Salmeron | 2 | 1 |
| Kathleen Duborg | Neath | Mother, Prostitute | 1 | 2 |
| Laurie Murdoch | Administrator Calder | Coroner, Lydon | 1 | 2 |
| Mark Acheson | Vishnoor | Ted Bertram, Trucker | 1 | 2 |
| Martin Evans | British Ambassador | Dr. Hartman, Major Domo | 1 | 2 |
| Richard Leacock | Col. Brogen, Sergeant | Cop #2 | 2 | 1 |
| Robert Moloney | Borren | Bruce Bearfeld, Worker | 1 | 2 |
| Ty Olsson | Col. Barnes, Jaffa #1 | Younger Orderly | 2 | 1 |
| Robert Thurston | Scientist | Dr. Larry Steen, Jackson Toews | 2 | 2 |
| Sean Campbell | Sergeant, Solek | Local Cop, Officer Sean | 2 | 2 |
| Suleka Mathew | Kali | Agent Linda Caleca, Lisa Dole | 2 | 2 |
| Tony Morelli | Bedrosian Soldier, Calder's Bodyguard, Jaffa | Cop | 3 | 1 |
| Addison Ridge | Nefrayu | Boy | 1 | 1 |
| Alison Matthews | Brenna | Doctor | 1 | 1 |
| Andy Thompson | Calvin | Customs Agent | 1 | 1 |
| Bob Frazer | Airman | Gary Kane | 1 | 1 |
| David Neale | Dialer, K'tau Male, Soldier | Navy Base Guard | 3 | 1 |
| François Chau | Chinese Ambassador | Peter Wong | 1 | 1 |
| Fred Henderson | Major Robert Thornbird | Agent Rich, Agent Thomas | 1 | 2 |
| John Billingsley | Simon Coombs | Timothy "Timmy the Geek" Landau | 1 | 1 |
| Paul Batten | French Ambassador | Brother Wilson, Dr. Seizer | 1 | 2 |
| Paul McGillion | Young Ernest Littlefield | Fred Neiman | 1 | 1 |
| Tom Heaton | Werner | Groundskeeper | 1 | 1 |
| Tom Scholte | Chazen | Johansen, Michael Sloan | 1 | 2 |
| Garvin Cross | Casey | Red Head Kid, Repairman | 1 | 2 |
| Greg Michaels | Joe Levinson | Scott Garrett | 1 | 2 |
| Johnny Cuthbert | Agent Devlin | Commanding Officer, Tiernan | 1 | 2 |
| Marc Baur | Senior Cop | Agent Brisentine, Man in Suit | 1 | 2 |
| Patrick Keating | Councilman | Beggar, Donald Gelman | 1 | 2 |
| Terrance Leigh | Abydonian, Jaffa | Snorkel Dude | 2 | 1 |
| Tosca Baggoo | Tok'ra Council Woman | Clerk | 2 | 1 |
| Dean McKenzie | Henchman | Army Tech | 1 | 1 |
| Duncan Fraser | Professor Langford | Beatty | 1 | 1 |
| Ed Hong-Louie | Zyang Wu | Money Man | 1 | 1 |
| Ellie Harvie | Dr. Lindsey Novak | OPO Staffer | 1 | 1 |
| Frank Cassini | Col. Shaun Greaves | Detective Cline | 1 | 1 |
| Jonathan Lloyd Walker | Ta'seem | Chuck Lukerman | 1 | 1 |
| Kevin Conway | SG Team Leader | Private Jack McAlpin | 1 | 1 |
| Sarah Strange | Morgan le Fay | Kimberly | 1 | 1 |
| Vitaly Kravchenko | Lt. Marchenko | J.J. | 1 | 1 |
| Zoran Vukelic | Jaffa | Peter | 1 | 1 |
| Beatrice Zeilinger | Cindy | Burly Nurse, Paramedic | 1 | 2 |
| Benita Ha | Brooks | Tour Guide | 2 | 1 |
| Igor Morozov | Roadblock Soldier, Russian Man | Vsevlod Pudovkin | 2 | 1 |
| Kurt Max Runte | Col. Kirkland, Major Henry Boyd | Ranger | 2 | 1 |
| Roger Allford | The President | Garrett Lorre, Harbourmaster | 1 | 2 |
| Bob Wilde | Priest | Rand | 1 | 1 |
| Cam Cronin | Door Airman | Paramedic | 1 | 1 |
| Danny Wattley | Lt. Daniel Johnson | First Officer | 1 | 1 |
| David Abbott | Dr. David Jordan | Judge Maibaum | 1 | 1 |
| Eileen Pedde | Major Gibson | Angie, Mrs. Skur | 1 | 2 |
| Jason Gaffney | Sanderson | Harold Lamb | 1 | 1 |
| John R. Taylor | Elder | Husband | 1 | 1 |
| Kwesi Ameyaw | Olokun | Judge | 2 | 1 |
| Paul Moniz de Sa | Fannis | Clinician #2 | 2 | 1 |
| Peter Anderson | Dr. Richard Flemming | Stan Buxton | 1 | 1 |
| Rob Morton | Sheriff | Kramer | 1 | 1 |
| Robert Mann | Dr. Bennett | Hillbilly Ed | 1 | 1 |
| Shaker Paleja | Jaffa | O.R. Surgeon | 1 | 1 |
| Terence Kelly | Hagan | George Usher | 1 | 1 |
| Terry David Mulligan | Secretary of Defence David Swift | Mission Controller #1 | 1 | 1 |
| Frank C. Turner | Homeless Man | Dr. Collins, Dr. Del Hakkie | 1 | 2 |
| Michael Ryan | John Prior | Agent Cameron Hill, Overcoat Man | 1 | 2 |
| Jase Anthony Griffith | Worker | Paramedic #1 | 1 | 1 |
| John Tench | Lizan | Steve | 1 | 1 |
| Ted Cole | Doctor | 2nd Paramedic | 1 | 1 |
| Wren Robertz | Red Guard | Orderly | 1 | 1 |
| Catherine Lough Haggquist | Technical Sergeant | Dr. Richmond | 1 | 1 |
| David Thomson | Antonius | Brother Oakley | 1 | 1 |
| John Tierney | Monk | Dr. Jacobs | 1 | 1 |
| Kim Kondrashoff | Roshure | Bobby Torrence | 1 | 1 |
| Kurt Evans | Col. Johnson | Sports Store Employee | 1 | 1 |
| Lisa Bunting | Claire Jackson | Doctor #1 | 1 | 1 |
| Patti Allan | Mrs. Kinsey | Mrs. Kernof | 1 | 1 |
| Ralph Alderman | Shop Owner | Manager | 1 | 1 |
| Ari Solomon | President Landry's Bodyguard | Bernard Gauthier | 1 | 1 |
| Derek Thomas Versteeg | Jaffa | M.P. | 1 | 1 |
| Donna Carroll White | Wendy Mitchell | Therapist | 1 | 1 |
| Guy Fauchon | Dr. Pullman | Dr. Dave Rednon | 1 | 1 |
| Joe Pascual | Medical Technician | Examiner | 1 | 1 |
| Alexander Boynton | Floor Director | Clean Cut Man | 1 | 1 |
| Allan Gray | Mr. Kent | Dr. Peter Valedespino | 1 | 1 |
| Jenn Forgie | Right Tech | Nurse | 1 | 1 |
| Joe Shea | Pamela Ambrose | Dana Scully | 1 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.