Complete for "Broken Bow" to "Carbon Creek".
Partial (unconfirmed) information for "Minefield" through "The Expanse".
Complete for "The Xindi" to "The Augments".
Partial (unconfirmed) information for "The Forge" through "Babel One".
| :: A :: | ||
|---|---|---|
| Dayo Ade | Klingon Tactical Officer | "Borderland" |
| Nikita Ager | Rajiin | "Rajiin" |
| Keith Allan | Raan | "Shockwave, Part II" |
| Steven Allerick | Ensign Cook | "The Crossing" |
| Jack Alsted | [Xindi] Sloth #2 | "The Shipment" |
| Joey Anaya | {stunt Xindi} | "Twilight" [uncredited] |
| Nathan Anderson | Sergeant Kemper | "The Xindi", "Anomaly" |
| David Andrews | Lorian | "E²" |
| Philip Anthony-Rodriguez | Juan | "Horizon" |
| Lee Arenberg | Gral | "Babel One" |
| Kristen Ariza | Augment #1 | "The Augments" |
| Vaughn Armstrong | Admiral Forrest | "Broken Bow", "Fortunate Son", "Shadows of P'Jem", "Fusion", "Fallen Hero", "Shockwave", "Shockwave, Part II", "Cease Fire", "Future Tense", "Regeneration", "The Expanse", "Home", "The Forge" |
| Commodore Forrest | "First Flight" | |
| Klingon Captain | "Sleeping Dogs" | |
| Kreetassan Captain | "Vox Sola", "A Night in Sickbay" | |
| Bruce Gray | Surak | "Awakening" |
| Rene Auberjonois | Ezral | "Oasis" |
| Erick Avari | Jamin | "Terra Nova" |
| :: B :: | ||
| Brett Baker | Crewman #2 | "Fight or Flight" [uncredited] |
| Scott Bakula | Captain Jonathan Archer | Season 1-4 |
| See also Marty Davis | ||
| Mike Baldridge | Crewman Dillard | "Unexpected" |
| John Balma | Muroc | "Cease Fire" |
| John Baron | Skagaran Boy [Yral] | "North Star" |
| Jim Beaver | Admiral Leonard | "Broken Bow" |
| Tom Bergeron | D'Marr | "Oasis" |
| Emily Bergl | Bethany | "North Star" |
| Victor Bevine | Flight Controller | "First Flight" |
| Casey Biggs | Illyrian Captain | "Damage" |
| John Billingsley | Doctor Phlox | Season 1-4 |
| Jolene Blalock | Sub-Commander T'Pol | Season 1-2 |
| T'Pol | Season 3, "Storm Front", "Storm Front, Part II" | |
| Commander T'Pol | Season 4 (except "Storm Front", "Storm Front, Part II") | |
| T'Mir | "Carbon Creek" | |
| John Harrington Bland | Kov | "Fusion" |
| J. Paul Boehmer | Mestral | "Carbon Creek" |
| Officer [in ZH]/S.S. Agent [in SF] | "Zero Hour", "Storm Front" | |
| Chelsea Bond | Alien Mother | "Broken Bow" |
| Michelle C. Bonilla | Officer Bu'Kah | "Sleeping Dogs" |
| Andrew Borba | Commander Kolo | "The Council", "Countdown", "Zero Hour" |
| Philip Boyd | Com Officer | "Extinction", "Exile" |
| Abby Brammell | Persis | "Borderland", "Cold Station 12", "The Augments" |
| Brigid Brannagh | Ruby | "First Flight" |
| Charlie Brewer | Alien/Akaali #1 | "Civilization" |
| Kevin Brief | Naarg | "Babel One" |
| Molly Brink | Lt. Talas | "Proving Ground", "Babel One" |
| Gary Bristow | Stablehand | "North Star" |
| Golden Brooks | Alicia Travers | "Storm Front", "Storm Front, Part II" |
| Clancy Brown | Zobral | "Desert Crossing" |
| Kipleigh Brown | Crewman Jane Taylor | "The Forgotten" |
| Gary Bullock | Klingon Council Member | "The Expanse" |
| Michael Reilly Burke | Koss | "Home", "The Forge", "Kir'Shara" |
| Scott Burkholder | Tagrim | "The Catwalk" |
| :: C :: | ||
| Keith Campbell | {stunt Crewman} | "Twilight" [uncredited] |
| Michael Canavan | Vulcan Advisor | "First Flight" |
| Jane Carr | Mary Reed | "Silent Enemy" |
| Keith Carradine | A.G. Robinson | "First Flight" |
| Mary Carver | Nadet | "Terra Nova" |
| Joanna Cassidy | T'Las | "Home", "Awakening" |
| Zane Cassidy | Andorian Soldier | "Cease Fire" |
| Helen Cates | Klingon First Officer | "Judgment" |
| Larry Cedar | Tessic | "Marauders" |
| Mark Chadwick | Male Tarkalean | "Regeneration" |
| Mark Chaet | Yolen | "The Breach" |
| Jacob Chambers | {stunt Xindi Reptilian} | "Twilight" [uncredited] |
| Alexander Chance | Crewman #1 | "The Crossing" |
| Michael Childers | Lawrence Strode | "Carpenter Street" |
| Joe Chrest | Bar Patron | "Home" |
| Julianne Christie | Ah'Len | "Unexpected" |
| Dennis Christopher | Danik | "Detained" |
| Melinda Clarke | Sarin | "Broken Bow" |
| Bill Cobbs | Emory Erickson | "Daedalus" |
| Dennis Cockrum | Alien Barkeep | "The Communicator" |
| Jeffrey Combs | Shran | "The Andorian Incident", "Shadows of P'Jem", "Cease Fire", "Proving Ground" [Commander Shran], "Zero Hour", "Kir'Shara", "Babel One" |
| Krem | "Acquisition" | |
| John Cothran, Jr. | Gralik Dur | "The Shipment" |
| Brian Cousins | Alien Lieutenant | "The Catwalk" |
| John Cragen | Crewman | "Unexpected" |
| Richard Anthony Crenna | Security Guard | "Twilight" |
| James Cromwell | Zefram Cochrane | "Broken Bow" [uncredited] |
| Leland Crooke | Firek Plinn | "Precious Cargo" |
| Roger Cross | Tret | "Extinction" |
| Josh Cruze | Captain Ramirez | "The Expanse" |
| Steven Culp | Major Hayes | "The Xindi", "The Shipment", "Harbinger", "Hatchery", "Countdown" |
| Erin Cummings | Prostitute #1 | "Carpenter Street" |
| Ann Cusack | Maggie | "Carbon Creek" |
| :: D :: | ||
| Ethan Dampf | Alien Child | "Broken Bow" |
| Brian D'Arcy | Crewman | "Zero Hour" [uncredited] |
| Christopher Darga | Captain Vorok | "Unexpected" |
| Marty Davis | Young Jonathan Archer [2121] | "Broken Bow" |
| See also Scott Bakula | ||
| Regi Davis | Klingon First Officer | "Unexpected" |
| Bruce Davison | Menos | "The Seventh" |
| Roxann Dawson | Computer Voice | "Dead Stop" [uncredited] |
| Vince Deadrick, Jr. | Jonathan Archer {stunt double} | "Twilight" [uncredited] |
| Paul Dean | Reptilian Technician | "Countdown" |
| Robertson Dean | Korok | "Marauders" |
| Charles Dennis | Chancellor Trelit | "Desert Crossing" |
| Steven Dennis | Tholos | "The Andorian Incident", "Shadows of P'Jem" |
| Kevin Derr | MACO #2 | "North Star [uncredited]" |
| Dan Desmond | Klingon Chancellor | "The Expanse" |
| Dayna Devon | N.D. Engineer | "The Augments" |
| Josette Di Carlo | Sphere Builder | "Damage", "The Council", "Countdown", "Zero Hour" |
| Diane DiLascio | Riann | "Civilization" |
| Jack Donner | Vulcan Priest | "Home", "Kir'Shara" |
| Cullen Douglas | Suliban Soldier | "Future Tense" |
| D.C. Douglas | Zepht | "The Breach" |
| Josh Drennen | Thalen [Degra's Assistant] | "Proving Ground", "Strategem" |
| See also Christopher Goodman | ||
| Donna Duplantier | Georgia Tandy [Prostitute #2] | "Carpenter Street" |
| Tom Dupont | Cowboy #3 | "North Star [uncredited]" |
| :: E :: | ||
| John Eddins | Xindi Reptilian | "The Shipment" |
| Jeff Eith | Cowboy #1 | "North Star [uncredited]" |
| Paul Eliopoulos | Crewman #1 | "Hatchery" |
| Michael Ensign | Dr. Oratt | "Stigma" |
| Van Epperson | Alien Man | "Broken Bow" |
| Stephanie Erb | I.M.E. Receptionist | "Shockwave" |
| Kaj-Erik Eriksen | Udar/"Smike" | "Cold Station 12" |
| Ian Eyre | {stunt Xindi} | "Twilight" [uncredited] |
| :: F :: | ||
| Ken Feinberg | Alien Captain | "Horizon" |
| David Figlioli | Klingon Crewman #1 | "The Expanse" |
| Kim Fitzgerald | Crewman | "Chosen Realm" |
| Jim Fitzpatrick | Commander Williams | "Broken Bow", "Shockwave, Part II", "Regeneration", "Home" |
| Fionnula Flanagan | Ambassador V'Lar | "Fallen Hero" |
| John Fleck | Silik | "Broken Bow", "Cold Front", "Shockwave", "Shockwave, Part II", "The Expanse", "Storm Front", "Storm Front, Part II" |
| J. Michael Flynn | Mazarite Official | "Fallen Hero" |
| Nijil | "Babel One" | |
| Steven Flynn | Maklii | "Marauders" |
| Nicole Forester | Nora | "Horizon" |
| Kevin Foster | Security Guard #1 | "Cold Station 12" |
| Robert Foxworth | V'Las | "The Forge", "Awakening", "Kir'Shara" |
| Chris Freeman | Alien Head Guard | "The Xindi" |
| Bruce French | Vulcan Elder | "The Andorian Incident" |
| Bonita Friedericy | Rooney | "Regeneration" |
| :: G :: | ||
| Rey Gallegos | Crewman | "Strange New World" |
| Michael Garvey | Gaptain Goroth | "Bounty" |
| Timothy Glenn | Med Tech | "Minefield" |
| Danny Goldring | Nausicaan Captain | "Fortunate Son" |
| Alien Captain | "The Catwalk" | |
| Renee E. Goldsberry | Crewman Kelly | "Vox Sola" |
| Christopher Goodman | Thalen [Degra's Assistant] | "Azati Prime" |
| See also Josh Drennen | ||
| Adam Taylor Gordon | Young Charles Tucker | "The Xindi" |
| See also Connor Trinneer | ||
| Sim-Trip at 8 | "Similitude" | |
| See also Maximillian Kesmodel, Shane Sweet, Connor Trinneer | ||
| Gary Graham | Ambassador Soval | "Broken Bow", "Shadows of P'Jem", "Shockwave, Part II", "Cease Fire", "The Expanse", "Twilight", "Home", "The Forge", "Awakening", "Kir'Shara" |
| Vince Grant | Yarrick | "Chosen Realm" |
| Brad Greenquist | Khata'n Zshaar | "Dawn" |
| Zach Grenier | Renth | "The Catwalk" |
| Adam Grimes | Lokesh | "Cold Station 12", "The Augments" |
| Francis Guinan | Gosis | "The Communicator" |
| Jack Gwaltney | Vosk | "Storm Front", "Storm Front, Part II" |
| :: H :: | ||
| J.D. Hall | Klingon Com Voice | "The Augments" |
| Melinda Page Hamilton | Feezal | "Stigma" |
| Vincent Hammond | Huge Alien | "The Seventh" |
| John Hansen | Prisoner #1 | "Canamar" |
| John Harnagel | Joe Prazki | "Storm Front" |
| Adam Harrington | Researcher | "Regeneration" |
| Hank Harris | Jack | "Carbon Creek" |
| Jeffrey Hayenga | Dr. Yuris | "Stigma" |
| Paul Hayes | Businessman | "Carbon Creek" |
| David Lewis Hays | Tactical Crewman | "Shockwave" |
| Gregg Henry | Zho'Kaan | "Dawn" |
| Daniel Asa Henson | Boy | "Fortunate Son" |
| J.G. Hertzler | Kolos | "Judgment" |
| Klingon Commander | "Borderland" | |
| Joseph Hindy | Prah Mantoos | "Cold Front" |
| Bari Hochwald | E'lis | "Marauders" |
| Ryan Honey | Guard | "Anomaly" |
| James Horan | Humanoid Figure | "Broken Bow", "Cold Front" [uncredited], "Shockwave", "The Expanse" |
| Clint Howard | Muk | "Acquisition" |
| Dennis Howard | Vulcan Captain | "Fallen Hero" |
| Drew Howerton | Steward | "Unexpected" |
| Matt Huhn | ND Triannon | "Chosen Realm" |
| :: I :: | ||
| Valerie Ianniello | Female Crewman | "The Crossing" |
| James Ingersol | Risan Man | "Two Days and Two Nights" |
| Laura Interval | Vissian Woman #2 | "Cogenitor" |
| Gregory Itzin | Captain Sopek | "Shadows of P'Jem" |
| Kris Iyer | Deputy Director | "Cold Station 12" |
| :: J :: | ||
| Brian Jacobs | Athan | "Terra Nova" |
| :: K :: | ||
| David Kagen | Major Klev | "Detained" |
| Matthew Kaminsky | Cunningham | "Singularity" |
| Crewman #2 | "The Crossing" | |
| Gary Kasper | Orion Slaver #2 | "Borderland" |
| Andreas Katsulas | Vissian Captain | "Cogenitor" |
| Dominic Keating | Lieutenant Malcolm Reed | Season 1-4 |
| Tim Kelleher | Lt. Pell | "The Communicator" |
| Leonard Kelly-Young | Sonsorra | "Cold Front" |
| BK Kennelly | Alien Merchant | "Rajiin" |
| Brandon Kerrer | Alien Man | "Desert Crossing" |
| Maximillian Kesmodel | Sim-Trip at 4 | "Similitude" |
| See also Adam Taylor Gordon, Shane Sweet, Connor Trinneer | ||
| Daniel Dae Kim | Corporal Chang | "The Xindi", "Extinction", "Hatchery" |
| David A. Kimball | Esaak | "Dear Doctor" |
| Ron King | Farmer Moore | "Broken Bow" |
| Wayne King, Jr. | Klingon #1 [uncredited?] | "Marauders" |
| Scott Klace | Firek Goff | "Precious Cargo" |
| Steven Klein | Draysik | "North Star" |
| Diane Klimaszewski | Butterfly Dancer | "Broken Bow" |
| Elaine Klimaszewski | Butterfly Dancer | "Broken Bow" |
| Donovan Knowles | Quinn | "Daedalus" |
| Jeff Kober | Traeg | "Shadows of P'Jem" |
| Danny Kolker | Guard | "Judgment" |
| TL Kolman | Alien Man | "Unexpected" |
| Thomas Kopache | Tos | "Broken Bow" |
| Alien | "Harbinger" | |
| Michael Kosik | Suliban Soldier | "Shockwave, Part II" |
| Michael Krawic | Stron | "Carbon Creek" |
| Zachary Krebs | Andorian N.D. | "Zero Hour" |
| :: L :: | ||
| Padma Lakshmi | Kaitaama | "Precious Cargo" |
| Ken Lally | Security Guard | "Anomaly", "Rajiin" |
| Steve Larson | Zjod | "Rajiin" |
| Larissa Laskin | Calla | "Cogenitor" |
| Jim Lau | Maitre d' [?] | "The Expanse" |
| Tess Lina | Karyn Archer | "E²" |
| Richard Lineback | Kessick | "The Xindi" |
| Tommy "Tiny" Lister, Jr. | Klaang | "Broken Bow" |
| D.J. Lockhart | Cell Guard | "Judgment" |
| Henri Lubatti | Crewman Ethan Novakovich | "Strange New World" |
| Charles Lucia | Captain Keene | "Fortunate Son" |
| Ricky Luna | Carlos | "Broken Bow" |
| Jordan Lund | Skalaar | "Bounty" |
| Aaron Lustig | Guri | "The Catwalk" |
| Bobbi Sue Luther | Orion Slave Woman | "Borderland" |
| :: M :: | ||
| Scott MacDonald | Commander Dolim [Xindi Reptilian] | "The Xindi", "Rajiin", "Proving Ground", "Azati Prime", "Damage", "The Council", "Countdown", "Zero Hour" |
| Seth MacFarlane | Engineer | "The Forgotten" |
| Elizabeth Magness | Injured Crewmember | "Minefield" |
| Crewman #1 | "The Catwalk" | |
| Paula Malcomson | Madeline Reed | "Silent Enemy" |
| Matt Malloy | Grish | "Acquisition" |
| Coleen Maloney | Vulcan Officer | "The Seventh" |
| Robert Mammana | Engineer [Eddie] | "Silent Enemy" |
| Noel Manzano | Ensign Burrows | "Daedalus" |
| Mary Mara | Sphere-Builder Presage | "The Council", "Countdown", "Zero Hour" |
| Ron Marasco | Captain Tellus [Vulcan Officer] | "Carbon Creek" |
| Morgan H. Margolis | Crewman Baird | "Vanishing Point" |
| Ada Maris | Captain Erika Hernandez | "Home" |
| Rudolf Martin | Ravis | "Two Days and Two Nights" |
| Joe Maruzzo | Sal | "Storm Front" |
| Billy Mayo | Officer #1 | "Carpenter Street" |
| Sean McGowan | Corporal Hawkins | "Anomaly", "Impulse", "Hatchery", "The Council" |
| Michael McGrady | Nausicaan | "Canamar" |
| Stephen McHattie | Alien Foreman | "The Xindi" |
| Cliff McLaughlin | Cowboy #3 | "North Star [uncredited]" |
| Jamie McShane | Tactical Crewman | "The Andorian Incident" |
| Geoff Meed | Dee'ahn Male | "Two Days and Two Nights" |
| Stephen Mendillo | Vulcan Captain | "The Seventh" |
| Troy Middleider | Palmer | "Extinction" |
| Burr Middleton | Newsreel Narrator | "Storm Front, Part II" |
| Lawrence Monoson | Matthew Ryan | "Fortunate Son" |
| Anthony Montgomery | Ensign Travis Mayweather | Season 1-4 |
| John B. Moody | Security Officer | "First Flight" |
| Dorenda Moore | MACO #1: S. Money | "North Star [uncredited]" |
| Tom Morga | Xindi Reptilian #2 | "Carpenter Street" [uncredited] |
| Jeffrey Dean Morgan | Xindi Reptilian #1 | "Carpenter Street" |
| Brian Morri | Enolian Guard | "Canamar" |
| Bob Morrisey | Dr. Strom | "Stigma" |
| Xindi Reptilian Captain | "The Forgotten" | |
| Glenn Morshower | Sheriff MacReady | "North Star" |
| Mark Moses | Henry Archer [2121] | "Broken Bow" |
| Kieran Mulroney | Shaw | "Fortunate Son" |
| Enrique Murciano | Tolaris | "Fusion" |
| :: N :: | ||
| Christopher Neame | German General | "Storm Front", "Storm Front, Part II" |
| Alex Nevil | Menk Man | "Dear Doctor" |
| Alec Newman | Malik | "Borderland", "Cold Station 12", "The Augments" |
| See also Jordan Orr | ||
| Stephanie Niznik | Woman | "Rogue Planet" |
| Greville Norwood | Akary | "Terra Nova" |
| Michael Nouri | Arev | "The Forge" |
| :: O :: | ||
| Conor O'Farrell | Buzaan | "Rogue Planet" |
| Prenom D'Jamat | "Chosen Realm" | |
| Randy Oglesby | Captain Trena'L | "Unexpected" |
| Degra | "The Xindi", "Rajiin", "The Shipment", "Proving Ground", "Strategem", "Azati Prime", "Damage", "The Forgotten", "E²", "The Council" | |
| Michael O'Hagan | Captain Fraddock | "Cold Front" |
| Robert O'Reilly | Kago-Darr | "Bounty" |
| Ed O'Ross | Gaavrin | "Bounty" |
| Jordan Orr | Young Malik | "Cold Station 12" |
| See also Alec Newman | ||
| Leland Orser | Loomis | "Carpenter Street" |
| Louis Ortiz | Klingon Warrior | "Bounty" |
| Holmes R. Osborne | Enolian Offician | "Canamar" |
| :: PQ :: | ||
| Linda Park | Ensign Hoshi Sato | Season 1-4 |
| Corey Mendell Parker | Paul Mayweather | "Horizon" |
| James Parks | Deputy Bennings | "North Star" |
| Adam Paul | Nichols | "Horizon" |
| David Pease | Technician | "Storm Front, Part II" |
| Ethan Phillips | Ulis | "Acquisition" |
| Robert Pickering | Bridge Officer | "Desert Crossing" [uncredited] |
| Peewee Piemonte | Klingon #2 [uncredited?] | "Marauders" |
| Eric Pierpoint | Shiraht | "Rogue Planet" |
| Robert Pine | Captain Tavin | "Fusion" |
| Sara Elizabeth Pizzo | Bridge Officer | "Desert Crossing" [uncredited] |
| Suzie Plakson | Tarah | "Cease Fire" |
| Dave Power | Ensign Jeffrey Pierce | "Borderland" |
| Joan Pringle | Rianna Mayweather | "Horizon" |
| Laura Putney | Trevix | "The Breach" |
| :: R :: | ||
| Paul Rae | Bertender | "North Star" |
| Nicole Randal | Female Tarkalean | "Regeneration" |
| DonnaMarie Recco | Dee'Ahn Female | "Two Days and Two Nights" |
| Brian Reddy | Dr. Temec | "The Communicator" |
| Stacie Renna | Traistana | "Cogenitor" |
| David Richards | Dockmaster | "The Seventh" |
| Brett Rickaby | Yedrin Koss | "Twilight" |
| Jeff Ricketts | Axanar Captain | "Fight or Flight" [as Jeff Rickets] |
| Keval | "The Andorian Incident" | |
| Richard Riehle | Dr. Jeremy Lucas | "Cold Station 12", "The Augments" |
| Efrain Riguerda | Translator Voice | "Fight or Flight" |
| F.J. Rio | Vissian Engineer | "Cogenitor" |
| Daniel Riordan | Duras | "Judgment", "The Expanse" |
| Gary Riotto | Alien #1 | "Vanishing Point" |
| Bob Rivers | Crewman | "Zero Hour" [uncredited] |
| Mark Rolston | Kuroda | "Canamar" |
| Captain Magh | "The Augments" | |
| Gil Rosales | {stunt Crewman} | "Twilight" [uncredited] |
| Julia Rose | Corporal McKenzie | "Anomaly" |
| John Rosenfeld | Mark Latrelle | "Silent Enemy" |
| John Rubinstein | Mazarite Captain | "Fallen Hero" |
| Kuvak | "Awakening", "Kir'Shara" | |
| Joseph Ruskin | Suliban Doctor | "Broken Bow" |
| Robert Rusler | Orgoth | "Anomaly" |
| Jesse James Rutherford | Q'ell | "Marauders" |
| Christopher Rydell | Valakian Astronaut | "Dear Doctor" |
| :: S :: | ||
| Alexandria [M.] Salling-Heacock | Skagaran Girl [Taliyah] | "North Star" |
| Marco Sanchez | Corporal Romero | "The Xindi" |
| Ric Sarabia | Alien #2 | "Vanishing Point" |
| Tom Schanley | Greer | "E²" |
| Steven R. Schirripa | Carmine | "Storm Front", "Storm Front, Part II" |
| Peter Henry Schroeder | Klingon Chancellor | "Broken Bow" |
| Paul Scott | Foster | "Regeneration" |
| David Selburg | Vulcan Captain | "Carbon Creek" |
| Christopher Shea | Sajen | "Detained" |
| Telev | "Cease Fire" | |
| Tayler Sheridan | Jareb | "Chosen Realm" |
| John Short | Drake | "Regeneration" |
| "Big Show" [Paul Wight] | Orion Slaver #1 | "Borderland" |
| L. Sidney | Klingon Crewman #2 | "The Expanse" |
| Leslie Silva | Danica Erickson | "Daedalus" |
| Mark Elliott Silverberg | Kraul | "Storm Front, Part II" |
| Guy Siner | Stuart Reed | "Silent Enemy" |
| Tucker Smallwood | Xindi Primate | "The Xindi", "Rajiin", "Proving Ground", "Azati Prime", "Damage", "E²", "The Council", "Countdown", "Zero Hour" |
| Jason Grant Smith | Crewman Fletcher | "Broken Bow" |
| Sean Smith | Alien Crewman | "The Catwalk" |
| Lee Spencer | Vulcan Doctor | "Stigma" |
| Melodee M. Spevack | Andorian Com Voice | "Kir'Shara" |
| Larc Spies | Stel | "The Forge" |
| Brent Spiner | Dr. Arik Soong | "Borderland", "Cold Station 12", "The Augments" |
| Todd Stashwick | Talok | "Kir'Shara" |
| Maury Sterling | Tarquin | "Exile" |
| Dean Stockwell | Colonel Grat | "Detained" |
| Lindsey Stoddart | Indava | "Chosen Realm" |
| Jessica D. Stone | Narra | "Detained" |
| Henry Stram | Hudak | "The Breach" |
| Justin Sunquist | {stunt Crewman} | "Twilight" [uncredited] |
| Sonny Suroweic | German Soldier | "Storm Front" |
| Claudette Sutherland | Maya | "Oasis" |
| Ted Sutton | Andorian General | "Proving Ground" [scenes re-shot with Granville Van Dusen; uncredited] |
| Shane Sweet | Sim-Trip at 17 | "Similitude" |
| See also Adam Taylor Gordon, Maximillian Kesmodel, Connor Trinneer | ||
| Keith Szarabajka | Damrus | "Rogue Planet" |
| :: T :: | ||
| Victor Talmadge | Asahf | "Judgment" |
| Richard Tanner | Vulcan Initiate | "The Andorian Incident" |
| Barbara J. Tarbuck | Chancellor Kalev | "Shadows of P'Jem" |
| Wilda Taylor | Woman | "Detained" |
| Bruce Thomas | Xindi Reptilian Soldier | "The Council", "Countdown", "Zero Hour" |
| Byron Thames | Crewman | "Broken Bow" |
| Carly Thomas | Alison | "Vanishing Point" |
| Serena Scott Thomas | Rebecca [scenes deleted; uncredited?] | "The Expanse" |
| Brian Thompson | Valdore | "Babel One" |
| Lamont D. Thompson | Silik, as N.D. Alien Pilgrim | "Cold Front" |
| Noa Tishby | Corporal Amanda Cole | "Harbinger" |
| Connor Trinneer | Commander Charles Tucker, III | Season 1-4 |
| See also Adam Taylor Gordon | ||
| Sim-Trip at 30 | "Similitude" [uncredited] | |
| See also Adam Taylor Gordon, Maximillian Kesmodel, Shane Sweet | ||
| Steve Truitt | Crewman #1 | "E²" |
| :: U :: | ||
| Amy Ulen | Engineer | "Zero Hour" [uncredited] |
| William Utay | Captain Vanik | "Breaking the Ice" |
| :: V :: | ||
| Granville Van Dusen | Magistrate | "Judgment" |
| Andorian General | "Proving Ground" [scenes re-shot from Ted Sutton] | |
| John Vickery | Orak | "Judgment" |
| Elyssa D. Vito | Girl [Nadine] | "Fortunate Son" |
| :: WX :: | ||
| Gregory Wagrowski | Ceris | "Chosen Realm" |
| Becky Wahlstrom | Cogenitor | "Cogenitor" |
| Dan Warner | Officer #2 | "Carpenter Street" |
| Jason Waters | Alien Soldier | "The Communicator" |
| Mike Watson | Skagaran | "North Star" [uncredited] |
| Kellie Waymire | Crewman Elizabeth Cutter | "Strange New World", "Dear Doctor", "Two Days and Two Nights" |
| Annie Wersching | Liana | "Oasis" |
| Joel West | Raakin | "Borderland" |
| Sean Whalen | Zoumas | "Canamar" |
| Richard Wharton | Jossen | "The Seventh" |
| Kenneth A. White | Engineering Crewman | "Anomaly" |
| Timothy Whittington | Bridge Officer | "Desert Crossing" [uncredited] |
| Amy Wieczorek | Female [Denobulan] Pilot | "Cold Station 12" |
| Karl Wiedergott | Larr | "Dear Doctor" |
| Paul Wight | See "Big Show" | |
| Clay Wilcox | Billy | "Carbon Creek" |
| Joseph Will | Crewman Michael Rostov | "Vox Sola", "Two Days and Two Nights", "The Crossing" |
| Brian J. Williams | Alien Decon Agent | "Extinction" |
| Jennifer Williams | Risan Woman | "Two Days and Two Nights" |
| Max Williams | Crewman #1 | "Fight or Flight" [uncredited] |
| Thom Williams | Klingon Soldier #1 | "Borderland" |
| Wade Andrew Williams | Garos | "Civilization" |
| Matt Williamson | Klingon Council Member | "Broken Bow" |
| Ruth Williamson | Sphere-Builder Primary | "The Council", "Countdown", "Zero Hour" |
| Rudolph Willrich | Captain Kuulan | "Oasis" |
| Matt Winston | "Crewman" Daniels | "Cold Front", "Shockwave", "Shockwave, Part II", "Carpenter Street", "Azati Prime", "Zero Hour", "Storm Front", "Storm Front, Part II" |
| Sam Witwer | [Xindi] Sloth #3 | "The Shipment" |
| D. Elliot Woods | Nausicaan Prisoner | "Fortunate Son" |
| Rick Worthy | Jannar [Xindi Sloth] | "The Xindi", "Rajiin", "Proving Ground", "Azati Prime", "Damage", "The Forgotten", "E²", "The Council", "Countdown", "Zero Hour" |
| Stephen Wozniak | Latia Male | "Two Days and Two Nights" |
| Bruce Wright | Dr. Fer'at | "The Expanse" |
| Tom Wright | Ghrath | "Storm Front" |
| Chris Wynne | Dr. Moninger | "Regeneration" |
| :: Y :: | ||
| Jamison Yang | Crewman | "The Breach" |
| Dey Young | Keyla | "Two Days and Two Nights" |
| Keone Young | Hoshi's Father | "Vanishing Point" |
| Dell Yount | B'rat Ud | "Rajiin" |
| David Youse | Nalbis | "Chosen Realm" |
| :: Z :: | ||
| Kara Zediker | T'Pau | "Awakening", "Kir'Shara" |
| Gunther Ziegler | Doctor | "Zero Hour" |
| :: Unknown :: | ||
| Unknown | Dr. Jeremy Lucas (voice) | "Dear Doctor" |
| Unknown | Shalat | "Oasis" |
| Unknown | Latia Female | "Two Days and Two Nights" |
| DJ Ryan ??? | Denobulan [uncredited] | "Cold Station 12" |
