cast
- William Shatner
- James T. Kirk
- Leonard Nimoy
- Mr. Spock
- DeForest Kelley
- Leonard "Bones" McCoy
- George Takei
- Hikaru Sulu
- James Doohan
- Montgomery "Scotty" Scott
- Walter Koenig
- Pavel Chekov
- Nichelle Nichols
- Uhura
- Mark Lenard
- Sarek
- Merritt Butrick
- David
- Judith Anderson
- High priestess
- Robin Curtis
- Saavik
- Robert Hooks
- Admiral Morrow
- Cathie Shirriff
- Valkris, Merchantship
- Phil Morris
- Trainee Foster
- Scott McGinnis
- "Mr. Adventure"
- Stephen Liska
- Torg, Klingon
- John Larroquette
- Maltz, Klingon
- Sharon Thomas
- Waitress
- Christopher Lloyd
- Kruge
- Alan Jones
- C. Lloyd's Stunt Man
- Alan Oliney
- Stunts
- Allan Miller
- Alien
- Bobby Cummings
- Klingon Gunner #1
- Branscombe Richmond
- Gunner #2
- Carl Steven
- Spock...Age 9
- Chuck Hicks
- Stunts
- Conroy Gedeon
- Civilian Agent
- Danny Rogers
- Stunts
- Dave Cadiente
- Sergeant, Klingon
- Don Charles McGovern
- Stunts
- Doug Shanklin
- Prison Guard
- Eddy Donno
- Stunts
- Frank Force
- Elevator Voice
- Frank Welker
- Spock (screams)
- Gary Faga
- Prison Guard #1
- Grace Lee Whitney
- Janice Rand
- Harve Bennett
- Flight Recorder
- James B. Sikking
- Capt. Styles, Excelsior
- Jeanne Mori
- USS Grissom Helm
- Jeff Jensen
- Stunts
- Joe W. Davis
- Spock...Age 25
- John Meier
- Shatner's Stunt Man
- Judi M. Durand
- Space Dock Controller
- Kenny Endoso
- Stunts
- Mario Marcelino
- USS Grissom Communications
- Miguel Ferrer
- 1st Officer, USS Excelsior
- Paul Sorenson
- Merchant Ship Captain
- Phil Chong
- Stunts
- Phillip Richard Allen
- Capt. Esteban, USS Grissom
- Stephen Manley
- Spock...Age 17
- Teresa E. Victor
- Enterprise Computer
- Tom Morga
- Stunts
- Vadia Potenza
- Spock...Age 13
crew
- Leonard Nimoy
- Director
- Gary Nardino
- Producer, Executive Producer
- Harve Bennett
- Producer, Screenwriter
- Charles Correll
- Cinematographer
- James Horner
- Composer (Music Score)
- Robert F. Shugrue
- Editor
- David Carson
- Art Director
- John E. Chilberg II
- Art Director
- Nilo Rodis
- Art Director
- Ralph Winter
- Associate Producer
- Blake Russell
- Set Designer
- Cameron Birnie
- Set Designer
- Tom Pedigo
- Set Designer
- Robert Fletcher
- Costume Designer
- Alan Howarth
- Special Effects
- Bob Dawson
- Special Effects
- Frank Serafine
- Special Effects
- Ken Ralston
- Special Effects
- Gene Roddenberry
- Consultant/advisor
- Scott Farrar
- Camera Operator
- Alan Oliney
- Stunts
- Chuck Hicks
- Stunts
- Chuck Picerni, Jr.
- Stunts
- Danny Rogers
- Stunts
- David Burton
- Stunts
- David Zellitti
- Stunts
- Don Charles McGovern
- Stunts
- Eddy Donno
- Stunts
- James M. Halty
- Stunts
- Jeff Jensen
- Stunts
- Phil Chong
- Stunts
- Ron Rondell
- Stunts
- Ron Stein
- Stunts, Stunts Coordinator
- Tom Morga
- Stunts
- Gene S. Cantamessa
- Sound Mixer
- Wes Dawn
- Makeup

