List of guest appearances on The X-Files

This is a list of actors who appeared in the long-running science fiction television series, The X-Files.

A

 * Andrew Airlie ("The Jersey Devil")
 * Krista Allen ("First Person Shooter")
 * Christopher Allport ("Lazarus")
 * Lauren Ambrose ("Babylon", "My Struggle II")
 * Robbie Amell ("Babylon", "My Struggle II")
 * Erich Anderson ("Invocation")
 * Michael J. Anderson ("Humbug")
 * Sam Anderson ("The Pine Bluff Variant")
 * Zachary Ansley ("Pilot")
 * Samaire Armstrong ("Lord of the Flies")
 * Tim Armstrong ("Home Again")
 * Madeleine Arthur ("Ghouli")
 * Edward Asner ("How the Ghosts Stole Christmas")
 * Jayne Atkinson ("Fearful Symmetry")
 * Erick Avari ("Lord of the Flies")
 * Nicki Aycox ("Rush")
 * John Aylward ("Sunshine Days")

B

 * Steve Bacic ("Soft Light", "Pusher", "Folie a Deux")
 * Scott Bairstow ("Miracle Man")
 * Gillian Barber ("Ghost in the Machine", "Red Museum")
 * Raymond J. Barry ("Little Green Men", "Nisei", "S.R. 819")
 * Frances Bay ("Excelsis Dei")
 * Jim Beaver ("Field Trip")
 * Henry Beckman ("Squeeze", "Tooms", "Chinga")
 * Jason Beghe ("Darkness Falls")
 * James Bell ("Squeeze")
 * Marshall Bell ("Fallen Angel")
 * Tobin Bell ("Brand X")
 * Richard Belzer ("Unusual Suspects")
 * Paul Ben-Victor ("Tooms")
 * Matthew Bennett ("The Host")
 * Abraham Benrubi ("Arcadia")
 * Daniel Benzali ("Fresh Bones")
 * Xander Berkeley ("Ice")
 * Michael Berryman ("Revelations")
 * Richard Beymer ("Sanguinarium")
 * Casey Biggs ("Vienen")
 * John Billingsley ("Three of a Kind")
 * Raye Birk ("War of the Coprophages")
 * Jack Black ("D.P.O.")
 * Rubén Blades ("El Mundo Gira")
 * Susan Blommaert ("Die Hand Die Verletzt")
 * Sam Bottoms ("Revelations")
 * Dennis Boutsikaris ("Brand X")
 * Michael Ray Bower ("First Person Shooter")
 * Tom Bower ("Rush")
 * Lombardo Boyar ("X-Cops")
 * Lynda Boyd ("Fire", "F. Emasculata")
 * Katy Boyer ("Hellbound")
 * Peter Boyle ("Clyde Bruckman's Final Repose")
 * W. Earl Brown ("Underneath")
 * Michael Bublé ("Piper Maru")
 * Tara Buck ("Orison")
 * A.J. Buckley ("War of the Coprophages")
 * Genevieve Buechner ("Nothing Lasts Forever")
 * Jere Burns ("Nothing Lasts Forever")
 * Darren E. Burrows ("Monday")
 * Dan Butler ("Die Hand Die Verletzt")
 * Tom Butler ("Ghost in the Machine")

C

 * R.D. Call ("Miracle Man")
 * Bruce Campbell ("Terms of Endearment")
 * Ron Canada ("Empedocles")
 * Timothy Carhart ("2Shy")
 * Alex Carter ("Familiar")
 * Christine Cavanaugh ("Small Potatoes")
 * Garry Chalk ("Babylon")
 * Erin Chambers ("Familiar")
 * Stuart Charno ("Clyde Bruckman's Final Repose")
 * François Chau ("Ghouli")
 * Lilyan Chauvin ("The Calusari")
 * Nick Chinlund ("Irresistible", "Orison")
 * Eric Christmas ("Excelsis Dei")
 * Debra Christofferson ("Arcadia")
 * Julian Christopher ("My Struggle II")
 * Charles Cioffi ("Pilot")
 * Dick Clark ("Millenium")
 * Helene Clarkson ("The Calusari")
 * Kristen Cloke ("The Field Where I Died", "Rm9sbG93ZXJz")
 * Robert Clothier ("Red Museum", "Piper Maru")
 * Randall "Tex" Cobb ("Fight Club")
 * Frederick Coffin ("Fallen Angel")
 * Signy Coleman ("Unusual Suspects", "Three of a Kind")
 * Brendan Patrick Connor ("Kitten")
 * Scott Cooper ("Rush")
 * Matt Corboy ("Rm9sbG93ZXJz")
 * Ben Cotton ("Ghouli")
 * Bernie Coulson ("Anasazi")
 * Richard Cox ("Brand X")
 * Bryan Cranston ("Drive")
 * Denise Crosby ("Empedocles", "Essence")
 * Garvin Cross ("Fearful Symmetry", "Herrenvolk")
 * Melinda Culea ("Alpha")
 * Colin Cunningham ("End Game", "731", "Wetwired")
 * John Cygan ("Blood")

D

 * Rhys Darby ("Mulder and Scully Meet the Were-Monster")
 * Lisa Darr ("Underneath")
 * Don S. Davis ("Beyond the Sea", "One Breath")
 * David Denman ("Field Trip")
 * Catherine Dent ("Trevor")
 * William Devane ("The Truth")
 * Cliff DeYoung ("Pilot")
 * Dale Dickey ("Existence")
 * John Diehl ("Trevor")
 * Garret Dillahunt ("Travelers")
 * Badja Djola ("The List")
 * Michael Dobson ("Jose Chung's From Outer Space")
 * Chad Donella ("Hungry")
 * Aaron Douglas ("Founder's Mutation")
 * Brad Dourif ("Beyond the Sea")
 * Bill Dow ("The Jersey Devil")
 * Ann Dowd ("Rush")
 * Billy Drago ("Theef")
 * Minnie Driver ("Hollywood A.D.")
 * Thomas F. Duffy ("Alpha")
 * Nora Dunn ("Dreamland", "Dreamland II")
 * Wayne Duvall ("Ghost in the Machine")
 * Eugene Dynarski ("Patience")

E

 * Rodney Eastman ("Invocation")
 * Tracey Ellis ("Oubliette")("Audrey Pauley")
 * Michael Emerson ("Sunshine Days")
 * Bradford English ("Patience")
 * The Enigma ("Humbug")
 * R. Lee Ermey ("Revelations")
 * Christine Estabrook ("Young at Heart")
 * Art Evans ("Fight Club")

F

 * Michael Fairman ("Synchrony")
 * David Faustino ("Sunshine Days")
 * Myles Ferguson ("F. Emasculata", "Schizogeny")
 * Louis Ferreira ("Ghouli")
 * Gavin Fink ("Scary Monsters")
 * Christine Firkins ("Within", "Without")
 * Frances Fisher ("Essence")
 * Colleen Flynn ("Detour", "all things")
 * Megan Follows ("Per Manum")
 * Ken Foree ("The List")
 * Jodie Foster ("Never Again")
 * Colby French ("Millennium")
 * Michael Bryan French ("Deep Throat")
 * Joseph Fuqua ("Synchrony")
 * Jim Fyfe ("Three of a Kind", "Jump the Shark")

G

 * M. C. Gainey ("Vienen")
 * Lorena Gale ("Shadows")
 * Spencer Garrett ("Sein und Zeit")
 * Willie Garson ("The Walk", "The Goldberg Variation")
 * Brian George ("The Sixth Extinction II: Amor Fati")
 * Ashlyn Gere ("Blood")
 * Marcus Giamatti ("Jump the Shark")
 * Don Gibb ("Conduit")
 * William Gibson ("First Person Shooter")
 * Matthew Glave ("The Truth")
 * Trevor Goddard ("Triangle")
 * Mike Gomez ("Little Green Men")
 * Walter Gotell ("Paper Clip")
 * Beth Grant ("Signs and Wonders")
 * Jason Gray-Stanford ("The Jersey Devil")
 * Seth Green ("Deep Throat")
 * Ellen Greene ("Improbable")
 * Kim Greist ("Invocation")
 * Zach Grenier ("Alone")
 * David Alan Grier ("Hollywood A.D.")
 * Jon Gries ("Sleepless")
 * Kathy Griffin ("Fight Club")
 * David Groh ("Kaddish")
 * Arye Gross ("Salvage")
 * Gary Grubbs ("Our Town")

H

 * Stacy Haiduk ("all things")
 * Carrie Hamilton ("Monday")
 * Laura Harris ("Die Hand Die Verletzt")
 * Anthony Harrison ("Conduit")
 * John Hawkes ("Milagro")
 * Anthony Heald ("Closure")
 * Lance Henriksen ("Millennium")
 * Jimmy Herman ("Shapes")
 * Barbara Hershey ("My Struggle III")
 * Grant Heslov ("Via Negativa")
 * Jennifer Hetrick ("Avatar")
 * Matt Hill ("Fresh Bones")
 * Judith Hoag ("Hungry")
 * Susan Lee Hoffman ("Synchrony")
 * Laurie Holden ("Herrenvolk, Teliko, Tunguska (The X-Files), Unrequited (The X-Files), Zero Sum (The X-Files), Patient X (The X-Files), The Red and the Black (The X-Files), One Son, Requiem (The X-Files), The Truth (The X-Files)")
 * Sandrine Holt ("This")
 * James Hong ("Hell Money")
 * Michael Horse ("Shapes")
 * Rance Howard ("My Struggle")
 * Rhys Huber ("The Jersey Devil")
 * Felicity Huffman ("Ice")
 * Alf Humphreys ("Space", "The Blessing Way", "Detour")
 * Brian Huskey ("The Lost Art of Forehead Sweat")
 * Doug Hutchison ("Squeeze", "Tooms")
 * Scott Hylands ("Unrequited")
 * Steve Hytner ("Ice")

I

 * Frankie Ingrassia ("The Rain King")
 * Katharine Isabelle ("Schizogeny")
 * Željko Ivanek ("Roland")

J

 * Victoria Jackson ("The Rain King")
 * Colton James ("Invocation")
 * Graham Jarvis ("Young at Heart")
 * Anjali Jay ("My Struggle III")
 * Ricky Jay ("The Amazing Maleeni")
 * Sarah Jeffery ("Ghouli")
 * Ken Jenkins ("Medusa")
 * Penny Johnson Jerald ("Medusa")
 * Andrew Johnston ("Deep Throat", "Colony", "End Game", "Demons")
 * O-Lan Jones ("Sanguinarium")
 * Kathryn Joosten ("Trust No 1")

K

 * Hiro Kanagawa ("Firewalker", "Synchrony", "My Struggle")
 * Caroline Kava ("Our Town")
 * Eric Keenleyside ("All Souls")
 * Lisa Robin Kelly ("Syzygy")
 * Kari Kennell ("Hellbound")
 * Janet Kidder ("Babylon")
 * Patrick Kilpatrick ("Surekill")
 * Ken Kirzinger ("Ice")
 * Tuesday Knight ("Trevor")
 * Mickey Knox ("S.R. 819")
 * Jeff Kober ("Ice")
 * Karin Konoval ("Clyde Bruckman's Final Repose", "Home", "Plus One")
 * Ken Kramer ("War of the Coprophages")
 * Kay E. Kuter ("The Calusari")

L

 * Rob LaBelle ("Ghost in the Machine")
 * Shia LaBeouf ("The Goldberg Variation")
 * Tyler Labine ("War of the Coprophages", "Quagmire", "Mulder and Scully Meet the Were-Monster")
 * Caroline Lagerfelt ("The Gift")
 * Campbell Lane ("Miracle Man", "The Calusari", "Tunguska", "Terma")
 * Robert LaSardo ("The Amazing Maleeni")
 * Sydney Lassick ("Elegy")
 * Ed Lauter ("Space")
 * Lucy Lawless ("Nothing Important Happened Today" Parts One and Two)
 * Gene LeBell ("Fight Club")
 * Kristin Lehman ("Kill Switch")
 * Fredric Lehne ("Travelers", "The Unnatural")
 * Téa Leoni ("Hollywood A.D.")
 * Mimi Lesseos ("Fight Club")
 * Jonathan Levit ("The Amazing Maleeni")
 * David Lewis ("The Jersey Devil", "Firewalker", "Oubliette")
 * Geoffrey Lewis ("Tithonus")
 * Andrea Libman ("Born Again")
 * Cody Lightning ("The Truth")
 * Lucy Liu ("Hell Money")
 * Ernie Lively ("D.P.O.")
 * Robyn Lively ("Field Trip")
 * Stephen Lobo ("Babylon")
 * Donal Logue ("Squeeze")
 * Brad Loree ("3", "Leonard Betts", "Unusual Suspects")
 * William Lucking ("Jose Chung's From Outer Space")
 * Carl Lumbly ("Teliko")
 * Jane Lynch ("Lord of the Flies")

M

 * Annet Mahendru ("My Struggle")
 * Wendie Malick ("The Beginning")
 * Stuart Margolin ("The Lost Art of Forehead Sweat")
 * Brian Markinson ("Born Again")
 * Jesse L. Martin ("Irresistible", "The Unnatural")
 * Benito Martinez ("The Beginning")
 * Tom Mason ("Avatar")
 * Michael Massee ("The Field Where I Died")
 * Tom McBeath ("Space", "3", "Teso Dos Bichos")
 * Heather McComb ("Die Hand Die Verletzt")
 * Paul McCrane ("Leonard Betts")
 * Neal McDonough ("Provenance", "Providence")
 * Darren McGavin ("Travelers", "Agua Mala")
 * Jack McGee ("Fight Club")
 * Paul McGillion ("Small Potatoes")
 * Richard McGonagle ("Deadalive")
 * Michael McGrady ("The Gift")
 * Melinda McGraw ("One Breath", "The Blessing Way", "Paper Clip", "Christmas Carol")
 * Joel McHale ('My Struggle", "My Struggle II")
 * Stephen McHattie ("Nisei", "731")
 * Michael McKean ("Dreamland", "Dreamland II", "Three of a Kind", "Jump the Shark")
 * Ray McKinnon ("Improbable")
 * Kate McNeil ("Theef")
 * Kevin McNulty ("Squeeze", "Soft Light")
 * Jamie McShane ("Providence")
 * Micole Mercurio ("Roland")
 * Tracy Middendorf ("Signs and Wonders")
 * John Milford ("Our Town")
 * Gabrielle Miller ("Our Town", "Syzygy")
 * Joel McKinnon Miller ("Agua Mala")
 * Ty Miller ("Shapes")
 * Deanna Milligan ("Irresistible")
 * Judson Mills ("X-Cops")
 * Silas Weir Mitchell ("Agua Mala")
 * Zakes Mokae ("Teliko")
 * Darin Morgan ("The Host", "Small Potatoes")
 * Glenn Morshower ("All Souls")
 * Janne Mortil ("Teso Dos Bichos")
 * Joe Morton ("Redrum")
 * Tegan Moss ("One Breath", "Piper Maru")
 * Lachlan Murdoch ("The Jersey Devil")
 * George Murdock ("The Red and the Black", "The End", "The Beginning", "Two Fathers")

N

 * Kumail Nanjiani ("Mulder and Scully Meet the Were-Monster")
 * Arthur J. Nascarella ("Underneath")
 * Eric Nenninger ("Signs and Wonders")
 * Omari Newton ("Founder's Mutation")
 * Dean Norris ("F. Emasculata")
 * Marilyn Norry ("Memento Mori")
 * Tom Noonan ("Paper Hearts")

O

 * Conor O'Farrell ("Roadrunners")
 * John O'Hurley ("The Post-Modern Prometheus")
 * Shannon O'Hurley ("Brand X")
 * William O'Leary ("Roadrunners")
 * Michael O'Neill ("Drive")
 * Terry O'Quinn ("Aubrey", "Trust No 1")
 * Cyril O'Reilly ("Hellbound")
 * Randy Oglesby ("Signs and Wonders")
 * Ty Olsson ("Kitsunegari")
 * Leland Orser ("Firewalker")
 * Holmes Osborne ("Millennium")
 * Haley Joel Osment ("Kitten")

P

 * Joel Palmer ("Conduit")
 * F. William Parker ("Chimera")
 * Aaron Paul ("Lord of the Flies")
 * Amanda Pays ("Fire")
 * Mark Pellegrino ("Hungry")
 * Emily Perkins ("All Souls")
 * Bobbie Phillips ("War of the Coprophages")
 * Tom Pickett ("Shadows")
 * Byrne Piven ("Paper Hearts")
 * Vic Polizos ("Pusher")
 * Brian Poth ("Scary Monsters")
 * CCH Pounder ("Duane Barry")
 * Lawrence Pressman ("Roadrunners")
 * Cynthia Preston ("Folie à Deux")
 * Barry Primus ("Shadows")
 * John Prosky ("Jump the Shark")
 * John Pyper-Ferguson ("F Emasculata") ("Emily") ("Christmas Carol")

R

 * Natalie Radford ("The Gift")
 * Steve Railsback ("Duane Barry", "Ascension")
 * Anthony Rapp ("Detour")
 * Sarah-Jane Redmond ("Aubrey", "Schizogeny")
 * Jed Rees ("Synchrony")
 * Perrey Reeves ("3")
 * Lee Reherman ("Vienen")
 * Charles Nelson Reilly ("Jose Chung's From Outer Space")
 * James Remar ("Daemonicus")
 * Patrick Renna ("Bad Blood")
 * Callum Keith Rennie ("Lazarus", "Fresh Bones")
 * Burt Reynolds ("Improbable")
 * Ryan Reynolds ("Syzygy")
 * Giovanni Ribisi ("D.P.O.")
 * Miles Robbins ("Ghouli", "My Struggle IV")
 * Ryan Robbins ("Founder's Mutation")
 * Andrew Robinson ("Alpha")
 * Zuleikha Robinson ("Jump the Shark")
 * Charles Rocket ("Three of a Kind")
 * Channon Roe ("Kaddish")
 * Kacey Rohl ("Founder's Mutation")
 * Clayton Rohner ("The Rain King")
 * Mark Rolston ("Red Museum", "Sein und Zeit")
 * Gabrielle Rose ("Deep Throat")
 * Jim Rose ("Humbug")
 * Teryl Rothery ("Excelsis Dei")
 * Rodney Rowland ("Never Again")
 * Deep Roy ("Badlaa")
 * Jan Rubeš ("Tunguska", "Terma")
 * Vyto Ruginis ("Medusa")
 * Leon Russom ("Pilot")
 * Steve Ryan ("Scary Monsters")

S

 * Vik Sahay ("Founder's Mutation")
 * Paul Sand ("Red Museum")
 * William Sanderson ("Blood")
 * Miguel Sandoval ("Vienen")
 * Zak Santiago ("Ghouli")
 * Will Sasso ("Je Souhaite")
 * John Savage ("Død Kalm")
 * Doug Savant ("Founder's Mutation")
 * Danielle Savre ("Sunshine Days")
 * Diana Scarwid ("Kitsunegari")
 * Wendy Schaal ("Chimera")
 * Vincent Schiavelli ("Humbug")
 * Rusty Schwimmer ("Roadrunners")
 * Judith Scott ("Medusa")
 * Judson Scott ("This is Not Happening", "DeadAlive", "Three Words")
 * Rodney Scott ("Rush")
 * Nestor Serrano ("Milagro")
 * Brent Sexton ("Patience", "Medusa")
 * Tony Shalhoub ("Soft Light")
 * Garry Shandling ("Hollywood A.D.")
 * Stan Shaw ("Audrey Pauley")
 * Mark Sheppard ("Fire")
 * Sab Shimono ("Excelsis Dei")
 * Daryl Shuttleworth ("Home Again")
 * Gregory Sierra ("The Jersey Devil")
 * Michael B. Silver ("Dreamland", "Dreamland II")
 * Isaac C. Singleton Jr. ("Triangle")
 * Tucker Smallwood ("Home")
 * Allison Smith ("Trust No 1")
 * Charles Martin Smith ("F. Emasculata")
 * Douglas Smith ("Home")
 * Jamil Walker Smith ("Fresh Bones")
 * Kurtwood Smith ("Grotesque")
 * Shawnee Smith ("Firewalker")
 * Carrie Snodgress ("Conduit")
 * Mark Snow ("Per Manum")
 * Veena Sood ("Shadows")
 * Nancy Sorel ("The Walk")
 * Sebastian Spence ("Home")
 * Octavia Spencer ("Millennium")
 * Jerry Springer ("The Post-Modern Prometheus")
 * Jewel Staite ("Oubliette")
 * Christopher Stanley ("Per Manum", "Empedocles")
 * Claire Stansfield ("The Jersey Devil")
 * Peter Stebbings ("Gender Bender")
 * Sally Stevens ("The Rain King")
 * Alexandra Stewart ("Pilot")
 * Don Stewart ("Teliko")
 * Malcolm Stewart ("Pilot")
 * Sarah Strange ("Duane Barry")
 * Don Swayze ("Hellbound")
 * Keith Szarabajka ("Via Negativa")

T

 * Amanda Tapping ("Avatar")
 * Lili Taylor ("Mind's Eye")
 * Sharon Taylor ("Familiar")
 * Jill Teed ("The Jersey Devil")
 * Roy Thinnes ("Talitha Cumi" "Herrenvolk" "This Is Not Happening" )
 * Eddie Kaye Thomas ("Requiem", "This Is Not Happening")
 * Susanna Thompson ("Space")
 * Kenneth Tigar ('S.R. 819")
 * Wayne Tippit ("The Jersey Devil")
 * Tony Todd ("Sleepless")
 * Lily Tomlin ("How the Ghosts Stole Christmas")
 * Gordon Tootoosis ("Teso Dos Bichos")
 * Ian Tracey ("The Walk")
 * Saxon Trainor ("Per Manum")
 * Alex Trebek ("Jose Chung's From Outer Space")
 * Danny Trejo ("Redrum")
 * Judd Trichter ("Requiem", "This Is Not Happening")
 * Kett Turton ("The Pine Bluff Variant")

U

 * Andy Umberger ("Requiem")
 * Jay Underwood ("Empedocles")

V

 * Justina Vail ("3")
 * Rob Van Dam ("Fight Club")
 * Jesse Ventura ("Jose Chung's From Outer Space")
 * Pruitt Taylor Vince ("Unruhe")
 * Daniel von Bargen ("The Pine Bluff Variant")

W

 * Shangela Laquifa Wadley ("Mulder and Scully Meet the Were-Monster")
 * George D. Wallace ("Hellbound")
 * J. T. Walsh ("The List")
 * M. Emmet Walsh ("The Unnatural")
 * Lisa Waltz ("Shadows")
 * Jerry Wasserman ("Tooms", "Excelsis Dei")
 * Kellie Waymire ("Surekill")
 * Fritz Weaver ("Tunguska", "Terma")
 * Timothy Webber ("Tooms", "Our Town", "Quagmire")
 * Kevin Weisman ("Je Souhaite")
 * Bruce Weitz ("Irresistible")
 * Michael Welch ("Badlaa")
 * Frank Welker ("Fearful Symmetry", "Teso Dos Bichos", "Patience")
 * Titus Welliver ("Darkness Falls")
 * Kenneth Welsh ("Revelations")
 * Floyd "Red Crow" Westerman ("Anasazi", "The Blessing Way", "Paper Clip", "Biogenesis", "The Sixth Extinction II: Amor Fati")
 * Maggie Wheeler ("Born Again")
 * Dana Wheeler-Nicholson ("Syzygy")
 * Bernard White ("This is Not Happening")
 * Peter White ("Arcadia")
 * Ted White ("Dreamland")
 * Dondré Whitfield ("Within")
 * Bradley Whitford ("Firewalker")
 * Christine Willes ("Irresistible", "The Căluşari", "Elegy", "Founder's Mutation)
 * Dick Anthony Williams ("Young at Heart")
 * Wade Williams ("Salvage")
 * Luke Wilson ("Bad Blood")
 * Scott Wilson ("Orison")
 * Robert Wisden ("Pusher", "Kitsunegari")
 * Michael Wiseman ("Lord of the Flies")
 * Rebecca Wisocky ("Founder's Mutation")
 * Karen Witter ("D.P.O.")
 * David Wohl ("Kaddish")
 * BD Wong ("Hell Money")
 * Bokeem Woodbine ("The List")
 * Morgan Woodward ("Aubrey")
 * Nicholas Worth ("The Goldberg Variation")

Y

 * Bellamy Young ("Redrum")
 * Bruce A. Young ("Fresh Bones")
 * Dey Young ("Born Again")
 * Harris Yulin ("Hollywood A.D.")

Z

 * Kevin Zegers ("Revelations")
 * Constance Zimmer ("First Person Shooter")