Raumschiff Enterprise
William ShatnerJames T. Kirk
Leonard NimoySpock
DeForest KelleyDr. McCoy
James DoohanScott
George TakeiSulu
Nichelle NicholsUhura
Walter KoenigPavel Chekov
Frank da VinciCapellan Warrior, Vulcan Ceremonial Aide, Vinci, Soldier at Party, Eminiar Guard, Lieutenant Osborne, Clifford Brent, Vulcan Aide
Eddie PaskeyLieutenant Ryan (uncredited), Lieutenant Leslie (uncredited), Conners
Ron VetoHarrison, Eminiar Guard
John WinstonLieutenant Kyle
Majel BarrettChristine Chapel, Number One
David L. RossJohnson, Galloway
Grace Lee WhitneyJanice Rand
Barbara BabcockTrelane's Mother (voice) (uncredited), Beta Five Computer (voice) / Isis (voice), Philana, Commander Loskene (voice), Lights of Zetar (voice), Mea 3- BBobby BassGuard (uncredited), Chekhov's Helper (uncredited)
Walker EdmistonBalok (voice) (uncredited), Transporter Chief (voice) (uncredited), Warning call from the S.S. Deidre (voice), Provider #2, Space Central (voice)(uncredited)
Bill BlackburnLieutenant Hadley (voice), Lieutenant Hadley (uncredited), Lieutenant Hadley / Rocket Base Technician (uncredited)- TTom AnfinsenCivilian Engineer (uncredited), Crewman (uncredited)
- CCarey FosterEnterprise Science Crew Member (uncredited), Enterprise Crew Member (uncredited)
Vic PerrinTharn, Nomad (voice), Metron (voice)- BBart La RueYarnek (voice), Announcer, Trelane's Father (voice) (uncredited), Provider #1
Elizabeth RogersLt. Palmer, The companion (voice)- MMichael BarrierDeSalle
Jim GoodwinFarrell
Richard ComptonWashburn, Technical Officer
Sean KenneyCrippled Pike, DePaul- JJanos ProhaskaThe Horta, The Mugato, Yarnek (uncredited)
Ted CassidyBalok's puppet (voice), Gorn (voice), Ruk
Bob JohnsonStarbase 6 commander (voice), Ground Control (voice) (uncredited), First Talosian (voice) (uncredited)
Barbara BaldavinAngela Teller, Angela Martine, Communications Officer- BBruce MarsCrewman, Finnegan, First Policeman
Roger C. CarmelHarcourt Fenton Mudd
Bruce HydeLt. Kevin Thomas Riley- MMichael ZaslowDarnell, Jordan
Mark LenardRomulan Commander, Sarek
Craig HuxleyPeter Kirk, Tommy Starnes
Lawrence MontaigneStonn, Decius
Booker BradshawDr. M'Benga
Diana MuldaurDr. Miranda Jones, Ann Mulhall
Richard DerrAdmiral Fitzgerald, Barstow
Victor BrandtTongo Rad, Watson
Skip HomeierMelakon, Dr. Sevrin
William CampbellTrelane, Captain Koloth
Byron MorrowAdmiral Westervliet, Admiral Komack- PPhyllis DouglasGirl #2 (Mavig), Yeoman Mears
- MMaKee K. BlaisdellSpinelli, Singh
Lev MailerBilar, S.S. Lieutenant
Morgan WoodwardCaptain Tracy, Dr. Simon van Gelder
Morgan FarleyYang Scholar, Hacom
Charles MacaulayLandru, Jaris
Abraham SofaerThasian (voice), Melkotian (voice)
Jon LormerOld Man, Tamar
Stewart MossHanar, Joe Tormolen
Gene DynarskiBen Childress, Krodak
John HarmonTepo, Bum who finds phaser- MMark TobinKlingon, Joaquim
Barry RussoCommodore Wesley, Lieutenant Commander Giotto
Garth PillsburyTroglyte prisoner, Wilson
Ian WolfeAtoz, Septimus
Hagan BeggsLieutenant Hansen- JJerry AyresRizzo / O'Herlihy
- LLois JewellDrusilla, Drusilla the Slave Girl
- JJames DrakeSecurity Guard (uncredited), Sick-Bay Intern (uncredited)
Paul BaxleySecurity Chief, Policeman #1 (uncredited)
Pete KellettKirk's Henchman, Morg Guard (uncredited)
Susan OliverVina (archive footage)
Marianna HillDr. Helen Noel
Clint HowardBalok
Arlene MartelT'Pring
Keye LukeDonald Cory
Lee MeriwetherLosira
Ricardo MontalbanKhan Noonien Singh
Reggie NalderShras
John ColicosKor
Julie NewmarEleen
Jason EversRael
Perry LopezLt. Esteban Rodriguez
Roy JensonCloud William
Harry BaschBrown
Robert BrownLazarus
Joan CollinsEdith Keeler
Michael AnsaraKang
Jeff CoreyPlasus
Lou AntonioLokai
Arnold MossAnton Karidian
Laurel GoodwinYeoman J. M. Colt (archive footage)
Dyanne ThorneFirst girl- MMarj DusayKara
Stanley AdamsCyrano Jones
William MarshallDr. Richard Daystrom- MMelvin BelliGorgan
Jill IrelandLeila Kalomi
David BrianJohn Gill
Don MarshallBoma
Elisha Cook Jr.Samuel Cogley
Keith AndesAkuta
France NuyenElaan
Jason WingreenDr. Linke
Sid HaigFirst Lawgiver
Mariette HartleyZarabeth
Angelique PettyjohnShahna
Leslie ParrishCarolyn Palamas
Kim DarbyMiri
Julie ParrishMiss Piper
John FiedlerHengist- CCharles MaxwellVirgil Earp
Barry AtwaterSurak
Brioni FarrellTula
Madlyn RhueMarla McGivers
Jane WyattAmanda
Sharon AckerOdona
Alfred RyderRobert Crater
Shirley BonneRuth
Charles DierkopMorla
Michael J. PollardJahn
Robert Walker Jr.Charlie Evans
James GregoryDr. Tristan Adams
Anthony CarusoBela Oxmyx
Charles DrakeCommodore Stocker
Rudy SolariSalish
Michael DunnAlexander
David FrankhamLarry Marvick
Louise SorelRayna Kapec
Fred WilliamsonAnka
Gary LockwoodLt. Cmdr. Gary Mitchell
Sherry JacksonAndrea
BarBara LunaMarlena Moreau
Whit BissellLurry
Dick DurockElasian Guard #1
Frank OvertonElias Sandoval
David SoulMakora
Johnny HaymerThe Constable
Teri GarrRoberta Lincoln
Pamelyn FerdinMary
Theo MarcuseKorob
Jeffrey HunterCapt. Christopher Pike (archive footage)
William WindomCommodore William Decker
Kathryn HaysGem
John AbbottAyleborn
Barbara BouchetKelinda
John GabrielCrewman (uncredited)
John CrawfordCommissioner Ferris
Michael ForestApollo
David OpatoshuAnan 7
Elinor DonahueCommissioner Nancy Hedford
Nancy KovackNona
Jack DonnerSubcommander Tal
Roger PerryCaptain John Christopher
Logan RamseyProconsul Claudius Marcus
Richard WebbLt. Commander Benjamin Finney
Torin ThatcherMarplon
Peter BroccoClaymare- GGeorgia SchmidtFirst Talosian (archive footage)
Arthur BatanidesLt. D'Amato
Warren StevensRojan
Kathie BrowneDeela
Harry LandersDr. Coleman
Liam SullivanParmen
Richard HaleGoro
Percy RodriguezCommodore Stone
Glenn CorbettZephram Cochran
Lee DelanoKalo
Ed PeckCol Fellini
Frank GorshinBele
Steve SandorLars
Katherine WoodvilleNatira
Stephen BrooksEnsign Garrovick
James DalyFlint
Karen SteeleEve McHuron
Barbara AndersonLenore Karidian
Lee BergereAbraham Lincoln
Paul FixDr. Piper
Celia LovskyT'Pau
Michael DanteMaab
William SmithersCaptain R.M. Merik
Jeanne BalNancy Crater
Michael PatakiKorax
Yvonne CraigMarta- OOliver McGowanCaretaker
- LLee DuncanEvans
Brian TochiRay- CCharles StewartCaptain Ramart
Beverly WashburnArlene Galway
Phillip PineCol. Green
Peter DuryeaLt. Tyler (archive footage)
Valora NolandDaras
Paul CarrLt. Lee Kelso
Stephen McEveetyRedheaded boy
Tige AndrewsKras
Bruce WatsonGreen
David HurstAmbassador Hodin
Antoinette BowerSylvia
Susan DenbergMagda Kovacs
Kenneth WashingtonWatkins
Steve IhnatLord Garth of Izar
Michael WitneyTyree- KKermit MurdockThe Prosecutor
- HHoward Culver
Robert LansingGary Seven
Charles NapierAdam
Billy CurtisSmall, copper skinned ambassador (uncredited)
Joanne LinvilleRomulan Commander
Charlie BrillArne Darvin
Don KeeferCromwell
Celeste YarnallYeoman Martha Landon
Lloyd HaynesAlden
Carey LoftinTruck driver (uncredited)
Vic TaybackJojo Krako
Ned RomeroKrell- DDick CrockettAndorian
Gregg PalmerRancher (uncredited)
Joan MarshallAreel Shaw
Meg WyllieThe Keeper (archive footage)- BBen GageAkaar
- JJoseph BernardTark
William SchallertNilz Baris
Maggie ThrettRuth Bonaventure
Michael StrongRoger Korby
Jay RobinsonLord Petri
Bill ZuckertJohnny Behan
George SawayaSecond Soldier- VVince HowardCrewman Stalking Uhura
Andrea DrommYeoman Smith
Victor LundinLieutenant
Rhodes ReasonFlavius Maximus
Harry TownesReger
Adam RoarkeC.P.O. Garrison (archive footage)
Leonard MudieSurvivor #2 (uncredited)- EEd ReimersAdmiral Fitzpatrick
Joseph RuskinGalt
Malachi ThroneThe Keeper (voice) (uncredited)
John HoytDr. Phil Boyce (archive footage)
Sally KellermanDr. Elizabeth Dehner- SSheila LeightonLuma
Mary Linda RapelyeIrina Galliulin
Deborah DowneyGirl #1
Richard EvansIsak- PPatrick HorganEneg
- WWilliam WintersoleAbrom
Gilbert GreenS.S. Major
Ed McCreadyS.S. Trooper
Diana EwingDroxine
Davis RobertsDr. Ozaba
Willard SageThann
Jan ShutanMira Romaine
Tony YoungKryton- CCharlene PoliteVanna
Edward MaddenFisher
Susanne WassonLethe
Anthony D. CallDave Bailey
John MegnaBonk Bonk on Head Boy
Paul ComiStiles
John WarburtonThe Centurion
Emily BanksTonia Barrows
Richard CarlyleJaeger- VVenita WolfTeresa
- JJames FarleyLang
Grant WoodsKelowitz- HHal LynchAir Police Sergeant
Gene LyonsAmbassador Fox
Miko MayamaYeoman Tamula
Ken LynchChief Engineer Vanderberg- BBrad WestonEd Appel
Biff ElliotSchmitter
Janet MacLachlanCharlene Masters
Hal BaylorPoliceman- JJoan SwiftAurelan Kirk
- MMaurishkaYeoman Zahra
- RRichard TatroNorman
Alyce AndreceAlice #1 -#250
William O'ConnellThelev- JJohn WheelerGav
Sarah MarshallJanet Wallace
Pilar SeuratSybo- JJane RossTamoon
- MMickey MortonKloog
Ron SobleWyatt Earp
Rex HolmanMorgan Earp- BBonnie BeecherSylvia
- LLezlie DaltonDrea
- AAlani iLongweLt. Shea
Julie CobbYeoman Thompson- EEd McReadyDr. Carter
Lloyd KinoWu
Sabrina ScharfMiramanee- MMarcia BrownAlice
- PPeter MarkoGaetano
- RRees VaughnLatimer
Alice RawlingsJame Finney
Karl HeldLindstrom- GGeoffrey BinneyCompton
Jon KowalHerm Gossett- VVince Deadrick Sr.Mathews
Budd AlbrightRayburn
William SargentDr. Thomas Leighton
Francine PyneNancy III- SSean MorganCrewman
Robert SampsonSar 6
Tanya Lemani GeorgeKara- AApril TatroIsis - human form
- IIrene KellySirah
- SSheldon CollinsTough Kid
- BBobby ClarkGorn (stunts)
Susan HowardMara- VVirginia AldridgeLt. Karen Tracy
- BBarbara GatesCrewman
Judith McConnellYeoman Tankris (as Judy McConnell)- JJudi ShervenNurse
Marc DanielsProf. Jackson Roykirk (uncredited)- CCarolyn NelsonYeoman Atkins
Anna KarenPickpocket Wench
Felix LocherMr. Johnson- LLaura WoodMrs. Johnson
Bob HerronKahless- AAnthony Larry PaulLt. Berkley (uncredited)
Sandra SmithDr. Janice Lester- WWalter Soo HooCrewman (uncredited)
- JJames X. MitchellLt. Josephs
Erik HollandEkor- AAlan BergmannLal
Robert FortierTomar- SShari NimsSayana
Gene RoddenberryEnterprise Chef (voice) (uncredited)
Rhae AndreceAlice #251-#500- KKay ElliotStella Mudd
- PPatricia McNultyYeoman Tina Lawton
Sam GilmanDoc Holliday
Charles SeelEd
Guy RaymondTrader- GGordon CoffeyRomulan Soldier
- MMike HowdenRomulan Guard
- RRobert GentileTechnician
- FFrieda RentieEnterprise Lieutenant (uncredited)
- JJames DarisCreature
- EEdwin RochelleMan With Newspaper (uncredited)
- EEsther Ying LeePedestrian (uncredited)
- RRudy DoucetteStaff Member (uncredited)
- RRobert D'ArcyPedestrian (uncredited)
Ted GehringSecond Policeman
Morgan JonesColonel Nesvig
Lincoln DemyanSergeant
Jack PerkinsMaster of Games
Max KlevenMaximus- TTony DanteLegionnaire (uncredited)
Chester HayesSound Effects Man (uncredited)
Shep HoughtonCameraman (uncredited)
Bob OrrisonPoliceman #2 (uncredited)
Gil PerkinsSlave #3 (uncredited)- PPaul StaderSlave #1 (uncredited)
- TTom SteeleSlave #2 (uncredited)
- JJoe WallsSlave (uncredited)
Garrison TrueSecurity Guard (uncredited)
Sandra Lee GimpelM-113 Creature (uncredited)- CCarol DanielsZora
Kellie FlanaganBlonde Girl
Adele YoshiokaKohm Servant (uncredited)
Sharyn HillyerSecond Girl
William Frederick KnightAmorous Crewman
Victoria GeorgeEnsign Jana Haines