Admiral James T. Kirk
Mr. Spock
Dr. Leonard 'Bones' McCoy
Cmdr. Montgomery 'Scotty' Scott
Lt. Cmdr. Hikaru Sulu
Lt. Pavel Chekov
Lt. Cmdr. Uhura
Captain William Decker
Lt. Ilia / The Probe
Dr. Christine Chapel
CPO Janice Rand
Klingon Captain
Alien Boy
Epsilon Technician
Airlock Technician
Crew Member
Klingon Crewman
Cmdr. Branch
Assistant to Rand
Cargo Deck Ensign
Lt. Cmdr. Sonak
Chief DiFalco
Lieutenant
Technician
Chief Ross
Lt. Cleary
Woman
Crew Member
Crew Member
Crew Member
Crew Member
Crew Member
Klingon Crewman
Klingon Crewman
Klingon Crewman
Klingon Crewman
Klingon Crewman
Klingon Crewman
Vulcan Master
Vulcan Master
Vulcan Master
Security Officer
Yeoman
Yeoman
Technical Assistant
Technical Assistant
Extra (uncredited)