| William Shatner (kapitán James T. Kirk), Leonard Nimoy (Spock), James Doohan (Montgomery Scott), DeForest Kelley (Leonard McCoy), Nichelle Nichols (Nyota Uhura), George Takei (Hikaru Sulu), Walter Koenig (Ensign Pavel Chekov), Jeffrey Hunter, John Hoyt (Dr. Phillip Boyce), Gary Lockwood, Sally Kellerman, Andrea Dromm, Majel Barrett (sestra Chapelová), Ricardo Montalban (Khan), Diana Muldaur (Ann Mulhallová), Roger C. Carmel (Harry Mudd), Joan Collins (sestra Keelerová), Grace Lee Whitney (asistent Randová), Mark Lenard (Sarek), Louise Sorel (Rayna Kapec), Robert Walker (Charlie), Lloyd Haynes (Alden), Harry Basch (Brown), Morgan Woodward (Dr. Simon van Gelder), Barbara Baldavin (Angela), William Campbell (Generál Trelane), Morgan Farley (Hacom), Theodore Marcuse (Korob), Antoinette Bower (Sylvia), William Windom (Komodor Decker), Paul Carr (Lee Kelso), John Gabriel (člen posádky), Percy Rodrigues (portmistr Stone), Jonathan Lippe (člen posádky), Vince Deadrick (Mathews), Ed Peck (Fellini), Arnold Moss (Karidian), Michael Forest (Apollon), Jill Ireland (Leila Kalomi), Frank Overton (Elias Sandoval), Glenn Corbett (Zefram Cochrane), Jane Wyatt (Amanda Graysonová), Nancy Kovack (Nona), Kay Elliot (Stella Mudd), Charlie Brill (Arne Darvin), Stephen Brooks (praporčík Garrovick), Marj Dusay (Kara), Logan Ramsey (Claudius), Michael Zaslow (Darnell), Barbara Babcock (Beta 5 počítač), Barbara Luna (Marlena), Charles Seel (Ed), Richard Evans (Isak), Mariette Hartley (Zarabeth), William Smithers (Merik), Garry Walberg (Hansen), Anna Karen (žena), Whit Bissell (Lurry), Warren Stevens (Rojan), Kim Darby (Miri), Joseph Ruskin (Galt), Davis Roberts (Dr. Ozaba / Lewis), Jonathan Goldsmith (člen posádky), Barry Atwater (Surak), Lee Bergere (Lincoln), Peter Mark Richman (Spockuv stoupenec), John Colicos (Kor), Yvonne Craig (Marta), Vince Howard (člen posádky), Angelique Pettyjohn (Shahna), Karl Held (Lindstrom), Carl Byrd (poručík Shea), Byron Morrow (admiral Komack / admiral Westervliet) |