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Jeffrey Hunter as Christopher Pike |
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Leonard Nimoy as Spock |
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Majel Barrett as Number One |
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Susan Oliver as Vina |
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Meg Wyllie as The Keeper |
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Peter Duryea as Lieutenant José Tyler |
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Laurel Goodwin as Yeoman J. M. Colt |
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Clegg Hoyt as Transporter Chief Pitcairn |
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Malachi Throne as The Keeper (voice) |
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Michael Dugan as The Kaylar |
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Georgia Schmidt as First Talosian |
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Robert C. Johnson as First Talosian (voice) |
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Serena Sande as Second Talosian |
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Jon Lormer as Dr. Theodore Haskins |
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Adam Roarke as C.P.O. Garrison |
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Leonard Mudie as Second Survivor |
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Anthony Jochim as Third Survivor |
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Edward Madden as Enterprise Geologist |
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Robert Phillips as Orion Space Officer |
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Joseph Mell as Earth Trader |
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Janos Prohaska as Anthropoid Ape / Humanoid Bird |
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Carol Daniels as Bridge Crewmember (uncredited) |
| Crew | Jim Danforth | Prop Maker |
| Costume & Make-Up | Norman A. Burza | Costume Supervisor |
| Directing | Robert H. Justman | Assistant Director |
| Crew | Frank da Vinci | Stunts |
| Art | Franz Bachelin | Art Direction |
| Camera | Richard A. Kelley | Camera Operator |
| Production | Lucille Ball | Executive Producer |
| Camera | Bill Butler | Assistant Camera |
| Crew | Carol Daniels | Stunts |
| Editing | Leo H. Shreve | Editor |
| Art | Pato Guzman | Production Design |
| Camera | William E. Snyder | Director of Photography |
| Production | Gene Roddenberry | Producer |
| Costume & Make-Up | John Chambers | Special Effects Makeup Artist |
| Sound | Earl Cooper | Sound Effects Editor |
| Crew | Sandra Lee Gimpel | Stunt Double |
| Visual Effects | Jena Huynh | Visual Effects Coordinator |
| Crew | Bob Herron | Stunt Double |
| Production | Desi Arnaz | Executive Producer |
| Art | Wah Chang | Prop Designer |
| Crew | Janos Prohaska | Stunts |
| Visual Effects | Niel Wray | Visual Effects Supervisor |
| Visual Effects | Wendy Ruiz | Visual Effects Coordinator |
| Visual Effects | Chris Tezber | Visual Effects Coordinator |
| Directing | Robert Butler | Director |
| Writing | Gene Roddenberry | Writer |
| Sound | Alexander Courage | Music |
