Star Trek IV: The Voyage Home - Cast

Cast

William Shatner plays James T. Kirk, former captain of the Enterprise. Shatner was unwilling to reprise the role of Kirk until he received a salary of $2 million and the promise of directing the next film. Shatner described The Voyage Home's comic quality as one "that verges on tongue-in-cheek but isn't, it's as though the characters within the play have a great deal of joy about themselves, a joy of living you play it with the reality you would in a kitchen-sink drama written for today's life."

Leonard Nimoy is the director of the film and plays Spock, who was resurrected by the effects of a powerful terraforming device and had his "living spirit" restored to his body in the previous film. DeForest Kelley portrays Doctor Leonard McCoy, who is given many of the film's comedic lines; Kelley biographer Terry Lee Rioux wrote that in the film "he seemed to be playing straight man to himself". On Earth McCoy was paired with engineer Montgomery Scott (James Doohan), as producer Harve Bennett felt that Kelley worked well with "old vaudeville comic". The other members of the Enterprise crew include George Takei as helmsman Hikaru Sulu, Walter Koenig as Commander Pavel Chekov, and Nichelle Nichols as Uhura. Koenig commented that Chekov was a "delight" to play in this film because he worked best in comedic situations.

Catherine Hicks plays Doctor Gillian Taylor, a biologist on 20th century Earth. During production a rumor circulated that the part had been created after Shatner demanded a love interest, a regular aspect of the television series that was absent from the first three films. Writer Nicholas Meyer denied this, saying that the inspiration for Taylor came from a woman biologist featured in a National Geographic documentary about whales. Nimoy chose Hicks after inviting her to lunch with Shatner and witnessing a chemistry between the two.

Majel Barrett reprises her role as Christine Chapel, the director of Starfleet Command's medical services. Many of her scenes—some reportedly very large—were omitted in the final cut, angering the actress. Her final role in the film consists of one line of dialogue and a reaction shot. Mark Lenard and Jane Wyatt play Ambassador Sarek and Amanda Grayson, respectively, Spock's parents. Wyatt commented that although she generally disliked working with actors who were directing, she found Nimoy an exception because he could concentrate on being part of the cast as well as setting up the crew. Robin Curtis reprises the role of Saavik, a Starfleet lieutenant. Saavik's role is minimal in the film—originally, she was intended to remain behind on Vulcan because she was pregnant after she had mated with the younger Spock in Star Trek III: The Search for Spock. In the final cut of the film, all references to her condition were dropped.

The film contains several cameos and smaller roles. Madge Sinclair makes an uncredited appearance as captain of the USS Saratoga. Jane Wiedlin appears as a Starfleet officer seen briefly at Starfleet Command. John Schuck appears as a Klingon ambassador, Robert Ellenstein as the Federation President, and Brock Peters as Fleet Admiral Cartwright. Grace Lee Whitney reprises her role as Janice Rand from the original television series.