William Shatner (James T. Kirk)
Leonard Nimoy (Mr. Spock)
DeForest Kelley (Leonard "Bones" McCoy)
Stephen Collins (Cmdr. Willard Decker)
James Doohan (Montgomery "Scotty" Scott)
George Takei (Hikaru Sulu)
Walter Koenig (Pavel Chekov)
Paul Weber (Vulcan Master)
Franklyn Seales (Crew Member)
Joel Kramer (Klingon Crewman)
Momo Yashima (Crew Member)
Craig Thomas (Klingon Crewman)
Tom Morga (Klingon Crewman)
Ralph Brannen (Crew Member)
Roger Aaron Brown (Epsilon Technician)
Ralph Byers (Crew Member)
Paula Crist (Crew Member)
Gary Faga (Airlock Technician)
John D. Gowans (Assistant to Rand)
Jon Rashad Kamal (Lt. Commander Sonak)
Susan Sullivan (Woman)
Mark Lenard (Klingon Captain)
Billy Van Zandt (Alien Boy)
Grace Lee Whitney (Janice Rand)
David Gautreaux (Commander Branch)
Marcy Lafferty (Chief DiFalco)
Michael Rougas (Lt. Cleary)
Persis Khambatta (Lt. Ilia)
Majel Barrett (Christine Chapel)
Nichelle Nichols (Uhura)