William Shatner
Admiral James T. Kirk
Acting
Leonard Nimoy
Mr. Spock
Acting
DeForest Kelley
Dr. Leonard 'Bones' McCoy
Acting
James Doohan
Cmdr. Montgomery 'Scotty' Scott
Acting
George Takei
Lt. Cmdr. Hikaru Sulu
Acting
Walter Koenig
Lt. Pavel Chekov
Acting
Nichelle Nichols
Lt. Cmdr. Uhura
Acting
Stephen Collins
Captain William Decker
Acting
Persis Khambatta
Lt. Ilia / The Probe
Acting
Majel Barrett
Dr. Christine Chapel
Acting
Grace Lee Whitney
CPO Janice Rand
Acting
Mark Lenard
Klingon Captain
Acting
Billy Van Zandt
Alien Boy
Writing
Roger Aaron Brown
Epsilon Technician
Acting
Gary Faga
Airlock Technician
Acting
Franklyn Seales
Crew Member
Acting
Joel Kramer
Klingon Crewman
Crew
David Gautreaux
Cmdr. Branch
Acting
John Gowans
Assistant to Rand
Acting
Howard Itzkowitz
Cargo Deck Ensign
Acting
Jon Rashad Kamal
Lt. Cmdr. Sonak
Acting
Marcy Lafferty
Chief DiFalco
Acting
Michele Povill
Lieutenant
Acting
Jeri McBride
Technician
Acting
Terrence O'Connor
Chief Ross
Acting
Michael Rougas
Lt. Cleary
Acting
Susan O'Sullivan
Woman
Acting
Ralph Brannen
Crew Member
Acting
Ralph Byers
Crew Member
Acting
Paula Crist
Crew Member
Crew
Iva Lane
Crew Member
Acting
Momo Yashima
Crew Member
Acting
Jimmie Booth
Klingon Crewman
Acting
Dave Moordigian
Klingon Crewman
Acting
Tom Morga
Klingon Crewman
Acting
Tony Rocco
Klingon Crewman
Acting
Joel Schultz
Klingon Crewman
Acting
Craig Thomas
Klingon Crewman
Acting
Edna Glover
Vulcan Master
Acting
Norman Stuart
Vulcan Master
Crew
Paul Weber
Vulcan Master
Acting
Joshua Gallegos
Security Officer
Acting
Lisa Chess
Yeoman
Acting
Leslie C. Howard
Yeoman
Acting
Sayra Hummel
Technical Assistant
Acting
Junero Jennings
Technical Assistant
Acting
Christopher Doohan
Extra (uncredited)
Acting