- David Dial
- Â Commodore Ian Knapp / ... 50 episodes, 2000-2007
- Barbara Clifford
- Â Counselor Myra Elbrey / ... 50 episodes, 2000-2007
- John Whiting
- Â Dr. Henglaar / ... 49 episodes, 2000-2007
- Risha Denney
- Â Captain Elizabeth Shelby / ... 45 episodes, 2000-2007
- Joanne Busch
- Â Lt. Cmd. Robin Lefler / ... 45 episodes, 2000-2007
- Larry LaVerne
- Â Commander Tolian Naros / ... 37 episodes, 2001-2007
- Arthur Bosserman
- Â Ensign Ro Nevin / ... 36 episodes, 2000-2004
- J.T. Tepnapa
- Â Lt. JG. Corey Aster / ... 34 episodes, 2001-2007
- Tyler Bosserman
- Â Ensign Andrew Barrett / ... 32 episodes, 2000-2007
- Wayne Webb
- Â Lt. Matt McCabe / ... 32 episodes, 2001-2007
- Reneé Huberstock
- Â Admiral Nechayev / ... 30 episodes, 2000-2007
- Adam Browne
- Â Ensign Jorian Zen / ... 25 episodes, 2003-2007
- Adrianne Lange
- Â Ensign Jenna McFarland / ... 24 episodes, 2000-2003
- Jennifer Cole
- Â Commodore Cole / ... 23 episodes, 2000-2007
- Terence Schoshinski
- Â Lt. Luko / ... 18 episodes, 2001-2003
- Tristan Clark
- Â Ensign Brad Rawlins / ... 16 episodes, 2000-2002
- Dave Mason
- Â DiFalco / ... 16 episodes, 2001-2007
- Mike Johns
- Â Cmd. Joseph Johns / ... 15 episodes, 2000-2007
- Bobby Rice
- Â Lt. Ro Nevin / ... 14 episodes, 2005-2007
- Jim Davis
- Â Siroc / ... 14 episodes, 2003-2007
- Rivkah Raven Wood
- Â Betras / ... 13 episodes, 2003-2007
- Cliff Gardner
- Â Lt. Cmd. James Darwin / ... 12 episodes, 2001-2007
- Beau Williams
- Â Artim / ... 11 episodes, 2001-2007
- Katie Moss
- Â Princess Illiana / ... 11 episodes, 2001-2007
- Sam Bacsa
- Â Ensign Wozniak / ... 11 episodes, 2003-2007
- Suzy Kaplan
- Â Vorina / ... 10 episodes, 2001-2004
- Julia Morizawa
- Â Lt. S'Tal / ... 10 episodes, 2003-2007
- Anthony Diaz
- Â Lt. John Martinez / ... 9 episodes, 2000-2005
- Julie Gardner
- Â Vorina 9 episodes, 2005-2007
- Rob Caves
- Â Background Performer / ... 9 episodes, 2000-2006
- Matt Kruer
- Â Lt. Toby Witczak / ... 8 episodes, 2000-2001
- Jason Munoz
- Â Lt. Cmd. Jason Munoz / ... 8 episodes, 2000-2007
- Samuel Keplinger
- Â Background Performer / ... 8 episodes, 2001-2006
- Brandon Ishkandar
- Â Background Performer 8 episodes, 2004-2007
- Jonathan Connor-Foertsch
- Â Mason / ... 8 episodes, 2001-2007
- Goldie Frankel
- Â Background Performer / ... 8 episodes, 2005-2007
- Betty Bainton
- Â Ensign Amelia Hanley / ... 7 episodes, 2000-2003
- Tim Foutch
- Â Pelas 7 episodes, 2006-2007
- Jessica Lyons
- Â Traya Knapp / ... 7 episodes, 2006-2007
- Sharon Savene
- Â Cmdr. Faisal / ... 7 episodes, 2005-2007
- Tony Williams
- Â Background Performer / ... 7 episodes, 2005-2007
- Gregory Allen
- Â Rayvan 6 episodes, 2000-2001
- Brandon Stacy
- Â Surgant / ... 6 episodes, 2005-2006
- Quinn Promarug
- Â Background Performer / ... 6 episodes, 2001-2004
- Matthew Montgomery
- Â Captain Nej'ta / ... 6 episodes, 2005-2007
- Michael Scott
- Â Background Performer 6 episodes, 2005-2007
- David O'Neill
- Â Background Performer / ... 6 episodes, 2006-2007
- Ryan Keating
- Â Background Performer / ... 5 episodes, 2001-2003
- Crystal Huerta
- Â Traya 5 episodes, 2001-2002
- Michelle G. O'Neil
- Â Dr. Tesla Mor / ... 5 episodes, 2005-2007
- Michael Hoff
- Â Lt. Biederman / ... 5 episodes, 2003-2006
- Karl Puder
- Â General Korg / ... 5 episodes, 2005-2007
- Sarah Mears
- Â Background Performer / ... 5 episodes, 2003-2006
- Heather Ashleigh
- Â Silan 5 episodes, 2006-2007
- Kevyn Eiselt
- Â Background Performer / ... 5 episodes, 2005-2007
- Simon Fraser
- Â Background Performer / ... 5 episodes, 2006-2007
- John Nelson
- Â Gul Malek / ... 5 episodes, 2002-2007
- John William Reynolds
- Â Aris 4 episodes, 2001-2002
- Kelly Jamison
- Â Lt. Cmd. Robin Lefler 4 episodes, 2000
- Dan Crout
- Â Sha'Kev / ... 4 episodes, 2001-2007
- Ariel Vitali
- Â Background Performer / ... 4 episodes, 2001-2004
- Angela Hahn
- Â Chief Teb 4 episodes, 2001-2003
- Joni Bovill
- Â Yeshva / ... 4 episodes, 2005-2007
- John Fox
- Â Background Performer 4 episodes, 2005-2006
- Daniel Garnreiter
- Â Background Performer / ... 4 episodes, 2003-2007
- John Rawling
- Â Commodore Terry 3 episodes, 2001-2002
- Dave Bundtzen
- Â Background Performer / ... 3 episodes, 2003
- Mona Eadington
- Â Captain Kira Nerys / ... 3 episodes, 2005-2006
- Susan L. Fox
- Â Cmdr. Sou / ... 3 episodes, 2004-2007
- Wendy Gough Soroka
- Â Background Performer / ... 3 episodes, 2003
- Carlos Pedraza
- Â Background Performer 3 episodes, 2004-2005
- Kyle Bring
- Â Aris 3 episodes, 2005-2007
- Lori Reynolds
- Â Background Performer 3 episodes, 2001-2002
- Jacob Reitz
- Â Klingon General / ... 3 episodes, 2005-2007
- Gabriel Giorgi
- Â Background Performer / ... 3 episodes, 2005-2006
- Andrew Foster
- Â Klingon Officer / ... 3 episodes, 2006-2007
- Tinee Carraker
- Â Background Performer 3 episodes, 2005-2007
- Jarrod Chambers
- Â Background Performer 3 episodes, 2006-2007
- Dale Everett
- Â Background Performer 3 episodes, 2005-2007
- Dale Darr
- Â Background Performer / ... 3 episodes, 2005-2007
- Gabriel Köerner
- Â Captain Jillson / ... 2 episodes, 2000-2006
- Brendan D. Pentzell
- Â Lt. Brandon Birkmeyer / ... 2 episodes, 2001-2002
- Philip Brickey
- Â Andorian Admiral / ... 2 episodes, 2000-2001
- Ariana Bradbury
- Â Grey Soldier / ... 2 episodes, 2003-2004
- Travis Sentell
- Â Gul Malek / ... 2 episodes, 2003
- Dave Dial
- Â Son'a Dealer / ... 2 episodes, 2001-2003
- Peter Elder
- Â Background Performer / ... 2 episodes, 2004
- Noora Hadden
- Â Traya / ... 2 episodes, 2005
- Michael J. Kirkland
- Â Falo 2 episodes, 2003-2006
- Celia Xavier
- Â Wise Master 2 episodes, 2004-2005
- Leanna Spear
- Â Traya 2 episodes, 2005-2006
- Mark Irvingson
- Â Cmdr. Uerrhrvek / ... 2 episodes, 2005
- Lorenzo Leonard
- Â Surgant 2 episodes, 2006-2007
- Glenn Barkan
- Â Ambassador Gev / ... 2 episodes, 2002-2003
- Sarah McGuire
- Â Tara Abis 2 episodes, 2005
- W. Jay Moore
- Â Gul Malek 2 episodes, 2005
- Carol Soldo
- Â Admiral Rand 2 episodes, 2006-2007
- Jonathan Benson
- Â Background Performer 2 episodes, 2006-2007
- Michael Estepp
- Â Background Performer 2 episodes, 2006-2007
- Robin Baker
- Â Background Performer 2 episodes, 2005-2007
- Christopher Jackiewicz
- Â Background Performer / ... 2 episodes, 2005-2007
- Albert Spiff
- Â Background Performer 2 episodes, 2006-2007
- Thomas Reynolds
- Â Background Performer / ... 2 episodes, 2005-2007
- Randall Mark
- Â Captain Hikaru Sulu 1 episode, 2001
- Alexander Mourad
- Â Hanar 1 episode, 2003
- James Cawley
- Â Capt. Mackenzie Calhoun 1 episode, 2005
- Chris Esquibel
- Â Whiteknight 1 episode, 2001
- Hugo Moreno
- Â Capt. J. T. Edwards 1 episode, 2001
- Hal Alpert
- Â Cassius Dao 1 episode, 2004
- Jennifer Marshall
- Â Col. Mira Sulvan 1 episode, 2004
- Cynthia Williams
- Â Injured Crewman 1 episode, 2001
- Jared Weber
- Â Chief Ruman 1 episode, 2004
- Lelamarie Kelly
- Â Laura 1 episode, 2004
- Christopher Clarkson
- Â Lt. Keran Azhan 1 episode, 2004
- Erica Nosidam
- Â Ensign Sutac 1 episode, 2002
- Mikka Scott
- Â Ensign Marla Durkos 1 episode, 2002
- Taylor Dooley
- Â Minister Rozhan 1 episode, 2003
- Christopher Bunye
- Â Mars Approach Control 1 episode, 2004
- Jeanne Garrington
- Â Lt. Cmd. Rodriguez 1 episode, 2000
- Jake Tenenbaum
- Â Lt. Tenenbaum 1 episode, 2001
- Brian Delmastro
- Â Security Officer 1 episode, 2001
- Elizabeth Reynolds
- Â Q 1 episode, 2002
- Jesse Saavedra
- Â Crewman Deadow 1 episode, 2004
- Camille Lacey
- Â Lt. Maya Tonkin 1 episode, 2005
- Cathy Carder
- Â Nurse Carder 1 episode, 2001
- Mike Storer
- Â Admiral Viek 1 episode, 2002
- Perry Garrett
- Â Simpson 1 episode, 2003
- Lee Lenox
- Â Pelas 1 episode, 2005
- Betsy Cramer
- Â Dr. Merideth Abney 1 episode, 2005
- Kate Quigley
- Â Silan 1 episode, 2006
- Ian McIntosh
- Â Trill Lieutenant 1 episode, 2006
- Tommy Roddy
- Â Gul Nikar 1 episode, 2006
- Paul Oppenheim
- Â Artim's Father 1 episode, 2001
- Carolyn Branson
- Â Stringwell 1 episode, 2003
- Mark Waters
- Â Lt. Doa 1 episode, 2004
- Mark Nelson
- Â Centurion 1 episode, 2005
- John Wallis
- Â Grey 1 episode, 2000
- Charlotte Le Vake
- Â Background Performer 1 episode, 2001
- Dennis Cherry
- Â Delivery Boy 1 episode, 2002
- ErinRose Widner
- Â Captain Pamela Hardin 1 episode, 2003
- Tasian Taylor
- Â Ensign Terna 1 episode, 2005
- Craig Byrne
- Â Breen 1 episode, 2004
- Rob Findlay
- Â Captain Kan'aj 1 episode, 2005
- Lance Beckoff
- Â Captain Zaar 1 episode, 2005
- Cindy Williams
- Â Background Performer 1 episode, 2001
- Adam Combs
- Â Background Performer 1 episode, 2003
- Adam Tindall
- Â Background Performer 1 episode, 2003
- Bryan Pisano
- Â Cmd. Benjamin Nostrom 1 episode, 2005
- Gary Barrett
- Â Background Performer 1 episode, 2002
- Robert O'Green
- Â Background Performer 1 episode, 2003
- Gabriel Cullen
- Â T'Roth 1 episode, 2005
- Michael Branford
- Â Admissions Officer 1 episode, 2005
- Matt Weser
- Â Orion Guard 1 1 episode, 2005
- Michael Hoff
- Â Background Performer 1 episode, 2002
- Tim Bland
- Â Background Performer 1 episode, 2003
- Lee Pitts
- Â Commander Rek'lar 1 episode, 2005
- Brian Tepnapa
- Â Background Performer 1 episode, 2006
- Keythn Eiselt
- Â Cardassian Officer 1 episode, 2006
- Rebecca Nayery
- Â Background Performer 1 episode, 2002
- Cynthia Banks
- Â Background Performer 1 episode, 2006
- Chris Zapatier
- Â Roy Davis 1 episode, 2006
- Craig Byrne
- Â Background Performer 1 episode, 2004
- Trent Yacovelli
- Â Background Performer 1 episode, 2004
- Kirk Bovill
- Â Announcer / ... 1 episode, 2005
- Jerry Angelo
- Â Klingon Crewman 1 episode, 2005
- Matthew Williams
- Â Background Performer 1 episode, 2005
- Leon Aiossa
- Â Background Performer 1 episode, 2006
- Ian McIntosh
- Â Trill Lieutenant 1 episode, 2007
- Jay Adam Young
- Â Starbase Ops 1 episode, 2007
- Jeff Sanders
- Â Background Performer 1 episode, 2007
- Joe Diaz
- Â Security Officer 1 episode, 2007
- Vin Jacobsen
- Â Background Performer 1 episode, 2005
- Arsen Mkrtchyan
- Â Thug 1 episode, 2006
- Gustavo Owner
- Â Background Performer 1 episode, 2006
- Alex Matthews
- Â Lt. Keran Azhan 1 episode, 2007
- Alison Koellisch
- Â Background Performer 1 episode, 2007
- Mike Urvand
- Â Background Performer / ... 1 episode, 2007
- James C. Martin
- Â Wedding Background Performer 1 episode, 2007
- Sylvia Hoffman
- Â Wedding Background Performer 1 episode, 2007
- Deborah Netburn
- Â Wedding Background Performer 1 episode, 2007
- Shaun T. Erickson
- Â Wedding Background Performer 1 episode, 2007
- Camren T. Burton
- Â Wedding Background Performer 1 episode, 2007
- Michael Hudson
- Â Wedding Background Performer 1 episode, 2007
- Rick Pike
- Â Wedding Background Performer 1 episode, 2007
- Brian Zinkle
- Â Wedding Background Performer 1 episode, 2007
- Don Naismith
- Â Wedding Background Performer 1 episode, 2007
- Jimmy Anderson
- Â Wedding Background Performer 1 episode, 2007
- Joshua Underwood
- Â Wedding Background Performer 1 episode, 2007
- Daniel LaForce
- Â Wedding Background Performer 1 episode, 2007
- Betsy Puder
- Â Wedding Background Performer 1 episode, 2007
- Barbara Puder
- Â Wedding Background Performer 1 episode, 2007
- Wendy L. Smith
- Â Wedding Background Performer 1 episode, 2007
- Chris Cappuccio
- Â Wedding Background Performer 1 episode, 2007
- Gina DeVettori
- Â Lieutenant Dais unknown episodes
- Hugh Gehrke
- Â Centurian unknown episodes
- James Walker
- Â James T. Kirk unknown episodes
- Kamel Dickinson
- Â Yeoman #2 unknown episodes