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