Directed by
  Leonard Nimoy

Writers
  Television series Star Trek
   Gene Roddenberry

  Story
   Leonard Nimoy & Harve Bennett

  Screenplay
   Steve Meerson & Peter Krikes and
   Harve Bennett & Nicholas Meyer

Producers
  Harve Bennett ... producer
  Brooke Breton ... associate producer
  Kirk Thatcher¹ ... associate producer
  Ralph Winter ... executive producer

Cast - in credits order  
(verified as complete)
  William Shatner ... Admiral/Captain
James T. Kirk
  Leonard Nimoy ... Captain Spock
  DeForest Kelley ... Dr. Leonard
"Bones" McCoy
  James Doohan ... Capt. Montgomery
"Scotty" Scott
  George Takei ... Cmdr. Hikaru Sulu
  Walter Koenig ... Cmdr. Pavel Chekov
  Nichelle Nichols ... Cmdr. Uhura
  Jane Wyatt ... Amanda
  Catherine Hicks ... Dr. Gillian Taylor
  Mark Lenard ... Ambassador Sarek
  Robin Curtis ... Lt. Saavik
  Robert Ellenstein ... Federation Council president
  John Schuck ... Klingon ambassador
  Brock Peters ... Adm. Cartwright
  Michael Snyder ... Starfleet communications officer
  Michael Berryman ... Starfleet display officer
  Mike Brislane ... Saratoga science officer
  Grace Lee Whitney ... Cmdr. Janice Rand
  Jane Wiedlin ... Alien communications officer
  Vijay Amritraj ... Starship captain
  Majel Barrett ... Dr. Christine Chapel
  Nick Ramus ... Saratoga helmsman
  Thaddeus Golas ... Controller #1
  Martin Pistone ... Controller #2
  Scott DeVenney ... Bob Briggs
  Viola Stimpson¹ ... Lady in tour
  Phil Rubenstein ... Garbageman #1
  John Miranda ... Garbageman #2
  Joe Knowland ... Antique-store owner
  Bob Sarlatte ... Waiter
  Everett Lee ... Cafe owner
  Richard Harder ... Joe
  Alex Henteloff ... Nichols
  Tony Edwards ... Pilot
  Eve Smith ... Elderly patient
  Tom Mustin ... Intern #1
  Greg Karas ... Intern #2
  Raymond Singer ... Young doctor
  David Ellenstein ... Doctor #1
  Judy Levitt ... Doctor #2
  Teresa E. Victor ... Usher
  James Menges ... Jogger
  Kirk Thatcher¹ ... Punk on bus/Vulcan computer voice
  Jeff Lester ... FBI agent interrogating Chekov
  Joe Lando ... Shore Patrolman
  Newell Tarrant ... Cmdr. Rogerson (CIC officer on Enterprise)
  Mike Timoney ... Electronics technician
  Jeffrey Martin ... Electronics technician
  Sgt. Joseph Naradzay ... Marine sergeant
  1st Lt. Donald W. Zautcke ... Marine lieutenant
Other credited cast listed alphabetically
  Joseph Adamson ... Doctor (uncredited)
  Monique DeSart ... Madeleine (uncredited)
  Stephen Liska ... Torg (archive footage) (uncredited)
  Madge Sinclair ... Saratoga captain (uncredited)

Original Music
  Alexander Courage (theme)
  Russell Ferrante (jazz music)
  Jimmy Haslip (jazz music)
  Mark A. Mangini (songs)
  Leonard Rosenman
  Kirk Thatcher¹ (song "I Hate You")

Cinematographers
  Don Peterman¹

Editors
  Peter E. Berger

Casting Directors
  Amanda Mackey Johnson

Production Designers
  Jack T. Collis
  Peter Landsdown Smith

Art Directors
  Joe Aubel
  Nilo Rodis-Jamero
  Peter Landsdown Smith

Set Decorators
  John M. Dwyer

Costume Designers
  Robert Fletcher

Make Up Department
  Silvia Abascal ... hair stylist
  Jeff Dawn ... makeup artist
  Wes Dawn ... makeup artist
  Monique DeSart ... hair stylist
  James Lee McCoy ... key makeup artist
  Carol A. O'Connell ... hair stylist
  Brian Wade ... Klingon and Vulcan
prosthetics designer

Production Managers
  Mel Efros ... unit production manager

Second Unit Directors or Assistant Directors
  Joe Adamson¹ ... DGA trainee
  Frank Capra III ... second assistant director
  Pat Kehoe ... first assistant director
  Michael Owens ... second unit director
  Randy Suhr ... assistant director
  Douglas E. Wise ... first assistant director

Art Department
  Richard J. Bayard ... construction coordinator
  James R. Bayliss ... set designer
  Richard Berger ... set designer
  Lloyd A. Buswell ... construction foreman
  Ed Charnock ... paint foreperson
  William K. Dolan ... property person
  Huey Duval ... property person
  John Gadette ... standby painter
  Daniel Gluck ... set designer
  Ron Greenwood ... property master
  Joe Hubbard¹ ... assistant art director
  John Matheson ... construction foreperson
  Ralph McQuarrie ... visual consultant
  Charles Sertin ... property person
  Barton M. Susman ... leadperson
  Kaye Trapp ... assistant property master

Sound Department
  Michael J. Benavente ... sound effects editor
  Else Blangsted ... music editor
  Destiny Borden ... assistant adr editor
  Raul A. Bruce ... boom operator
  George Budd ... special sound effects
  Gene S. Cantamessa ... sound mixer
  Steve Cantamessa ... boom operator
  Christopher Flick ... assistant adr editor
  Stephen Hunter Flick ... sound effects editor
  Warren Hamilton Jr. ... sound effects editor
  Doug Hemphill ... sound effects recordist
  Ellen Heuer ... foley artist
  Alan Howarth ... special sound effects
  David J. Hudson ... sound re-recording mixer
  Mark Jennings ... utility sound
  Nicholas Vincent Korda ... adr editor
  Mark A. Mangini ... supervising sound
  Tim Mangini ... foley editor
  A. David Marshall ... music editor
  Mel Metcalfe ... sound re-recording mixer
  Dan O'Connell ... foley artist
  Terry Porter ... sound re-recording mixer
  John Pospisil ... special sound effects
  Solange S. Schwalbe ... foley editor
  David E. Stone ... sound editor
  Clive Taylor ... sound recordist
  Dan Wallin ... score mixer

Special Effects Department
  Donald Elliott ... special effects
  Michael Lantieri ... special effects supervisor
  Tim Moran ... special effects
  Clay Pinney ... special effects
  Robert Spurlock ... special effects
  Brian Tipton ... special effects: first unit

Stunts
  Gregory Barnett¹ ... stunt double: Leonard Nimoy
  Steve M. Davison ... stunts
  Clifford T. Fleming¹ ... stunts
  Eddie Hice ... stunts
  John Meier ... stunt double: William Shatner
  Bennie E. Moore Jr.¹ ... stunts
  Charles Picerni Jr.¹ ... stunts
  R.A. Rondell ... stunt coordinator
  Sharon Schaffer ... stunts
  Spike Silver ... stunts
  John Meier ... stunt coordinator (uncredited)
  Jim O'Rear ... stunts (uncredited)
  R.A. Rondell ... stunts (uncredited)