Ash has seen this movie.
The fate of the galaxy rests in the hands of bitter rivals. One, James Kirk, is a delinquent, thrill-seeking Iowa farm boy. The other, Spock, a Vulcan, was raised in a logic-based society that rejects all emotion. As fiery instinct clashes with calm reason, their unlikely but powerful partnership is the only thing capable of leading their crew through unimaginable danger, boldly going where no one has gone before. The human adventure has begun again.
| Cadet James T. Kirk | Chris Pine |
| Commander Spock | Zachary Quinto |
| Ambassador Spock | Leonard Nimoy |
| Captain Nero | Eric Bana |
| Captain Christopher Pike | Bruce Greenwood |
| Dr. Leonard 'Bones' McCoy | Karl Urban |
| Lieutenant Nyota Uhura | Zoe Saldaña |
| Lieutenant Commander Montgomery 'Scotty' Scott | Simon Pegg |
| Lieutenant Hikaru Sulu | John Cho |
| Ensign Pavel Chekov | Anton Yelchin |
| Sarek | Ben Cross |
| Amanda Grayson | Winona Ryder |
| Commander George Kirk | Chris Hemsworth |
| Winona Kirk | Jennifer Morrison |
| Galia | Rachel Nichols |
| Captain Robau | Faran Tahir |
| Ayel | Clifton Collins Jr. |
| Officer Pitts | Tony Elias |
| Tactical Officer | Sean Gerace |
| Kelvin Crew Member | Randy Pausch |
| Kelvin Engineer | Tim Griffin |
| Kelvin Helmsman | Freda Foh Shen |
| Kelvin Alien | Kasia Kowalczyk |
| Romulan Helmsman | Jason Brooks |
| Kelvin Doctor | Sonita Henry |
| Medical Technician | Kelvin Yu |
| Medical Technician | Marta Martin |
| Kelvin Crew Member | Tavarus Conley |
| Kelvin Crew Member | Jeff Castle |
| Med Evac Pilot | Billy Brown |
| Young James T. Kirk | Jimmy Bennett |
| Stepdad (voice) | Greg Grunberg |
| Johnny | Spencer Daniels |
| Iowa Cop | Jeremy Fitzgerald |
| Vulcan Student | Zoe Chernov |
| Vulcan Student | Max Chernov |
| Young Spock | Jacob Kogan |
| Vulcan Bully | Lorenzo James Henrie |
| Vulcan Bully | Colby Paul |
| Vulcan Bully | Cody Klop |
| Vulcan Council Member | Akiva Goldsman |
| Vulcan Council Member | Anna Katarina |
| Long Face Bar Alien | Douglas Tait |
| Lew the Bartender | Tony Guma |
| Barfly | Gerald W. Abrams |
| Barfly | James McGrath |
| Burly Cadet | Jason Matthew Smith |
| Burly Cadet | Marcus Young |
| Shipyard Worker | Bob Clendenin |
| Flight Officer | Darlena Tejeiro |
| Test Administrator | Reggie Lee |
| Test Administrator | Jeffrey Byron |
| Simulator Tactical Officer | Jonathan Dixon |
| Admiral Richard Barnett | Tyler Perry |
| Admiral James Komack | Ben Binswagner |
| College Council Stenographer | Margot Farley |
| Barracks Officer | Paul McGillion |
| Barracks Officer | Lisa Vidal |
| Shuttle Officer | Alex Nevil |
| Kimberly Arland | Kimberly Arland |
| Cadet Alien | Sufe Bradshaw |
| Cadet Alien | Jeff Chase |
| Enterprise Crew Member | Charles Haugk |
| Enterprise Crew Member | Nana Kagga-Hill |
| Enterprise Crew Member | John Blackman |
| Enterprise Crew Member | Jack Millard |
| Enterprise Crew Member | Shaela Luter |
| Enterprise Crew Member | Sabrina Morris |
| Enterprise Crew Member | Michelle Parylak |
| Enterprise Communications Officer | Osgood Perkins |
| Hannity | Amanda Foreman |
| Romulan Tactical Officer | Michael Berry Jr. |
| Romulan Communications Officer | Lucia Rijker |
| Romulan Officer | Pasha D. Lychnikoff |
| Romulan Crew Member | Matt Beisner |
| Romulan Crew Member | Neville Page |
| Romulan Crew Member | Jesper Inglis |
| Chief Engineer Olsen | Greg Ellis |
| Transport Chief | Marlene Forte |
| Vulcan Elder | Leonard O. Turner |
| Vulcan Elder | Mark Bramhall |
| Vulcan Elder | Ronald F. Hoiseck |
| Vulcan Elder | Irene Roseen |
| Vulcan Elder | Jeff O'Haco |
| Nero's Wife | Scottie Thompson |
| Keenser | Deep Roy |
| Starfleet Computer (voice) | Majel Barrett |
| Shuttle Pilot (uncredited) | Ronnie Steadman |
| Council Member - Captain Kelley Bogel (uncredited) | Rico E. Anderson |
| Romulan Science Tech (uncredited) | Richard Arnold |
| Amphibian Prisoner (uncredited) | Tad Atkinson |
| Doctor (uncredited) | Leslie Augustine |
| Starfleet Cadet (uncredited) | Johnny Baca |
| The Wrong Orion | Diora Baird |
| Drill Tower Romulan (uncredited) | Sala Baker |
| Starfleet Cadet (uncredited) | Leo Baligaya |
| Starfleet Cadet (uncredited) | Corey Becker |
| Transport Chief (uncredited) | Larry Blackman |
| Bridgeport Cadet (uncredited) | Jessica Boss |
| Starfleet Cadet (uncredited) | Neil S. Bulk |
| Starfleet Cadet (uncredited) | Etalvia Cashin |
| Enterprise Crewmember (uncredited) | James Cawley |
| Starfleet Cadet (uncredited) | Brad Champagne |
| Starfleet Cadet (uncredited) | Zachary Culbertson |
| Cop (uncredited) | Jeffrey De Serrano |
| Starfleet Cadet (uncredited) | T.C. De Witt |
| Starfleet Officer (uncredited) | Christopher Doohan |
| Enterprise Crew Member (uncredited) | Claire Doré |
| Vulcan Federation Officer (uncredited) | Etienne Eckert |
| Doctor (uncredited) | Ken Edling |
| Hurried Cadet with Clipboard (uncredited) | Aliza Finley |
| Shipyard Worker (uncredited) | Ian Fisher |
| Vulcan Cadet (uncredited) | Anna Florence |
| Starfleet Cadet (uncredited) | Mathew Thomas Foss |
| Missile Launcher (uncredited) | Massi Furlan |
| FourSquare (uncredited) | Tommy Germanovich Jr. |
| Shipyard Bar Patron (uncredited) | Mary Grace |
| Starfleet Cadet (uncredited) | Wyatt Gray |
| Crew Member (uncredited) | Nancy Guerriero |
| Starfleet Cadet (uncredited) | Jarrell Hall |
| Starfleet Security Officer (uncredited) | Justin Rodgers Hall |
| Kelvin Crew Member (uncredited) | Jeffery Hauser |
| Uncle Frank (uncredited) (unconfirmed) | Brad William Henke |
| Enterprise Crew Member (uncredited) | Ryan T. Husk |
| Enterprise Nurse (uncredited) | Elizabeth Ingalls |
| Starfleet Cadet (uncredited) | Sierra Kane |
| Shipyard Worker (uncredited) | Christopher Karl Johnson |
| Enterprise Crew Member (uncredited) | Jolene Kay |
| Kelvin Bridge Officer (uncredited) | Lauren Mary Kim |
| Starfleet Cadet (uncredited) | Sarah Klaren |
| Enterprise Crew Member (uncredited) | Makiko Konishi |
| Starfleet Cadet (uncredited) | Tashana Landray |
| Starfleet Commander (uncredited) | Daniel D. Lee |
| Enterprise Crew Member (uncredited) | Anne Leighton |
| Romulan (uncredited) | James Lew |
| Young Vulcan Midwife (uncredited) | Jill Lover |
| Lieutenant Star Fleet Command (uncredited) | Steve Luna |
| Flight Operational Air Safety Conductor (uncredited) | Aaron Lynch |
| Starfleet Cadet (uncredited) | Justin Malachi |
| Romulan Crew Member Placing Bomb (uncredited) | Nav Mann |
| Bar Patron (uncredited) | Paul Marshall |
| Alien Cadet / Enterprise Crew (uncredited) | Owen Martin |
| Kelvin Alien (uncredited) | Taylor McCluskey |
| Starfleet Cadet (uncredited) | Matthew McGregor |
| Kelvin Computer (uncredited) | Caitlin McKenna |
| Starfleet Cadet (uncredited) | Andrew Mew |
| Councilwoman (uncredited) | Patrizia Milano |
| Kelvin Crewmember (uncredited) | Heidi Moneymaker |
| Enterprise Crewman (uncredited) | Kevin Moser |
| Starfleet Cadet (uncredited) | Jonathan Dunkerley Newkerk |
| Enterprise Crew Member (uncredited) | Westley Nguyen |
| Sal (uncredited) | Jim Nieb |
| Romulan Crew Member (uncredited) | Andres Perez-Molina |
| Romulan (uncredited) | Mark Phelan |
| Drill Hanson #1 (uncredited) | Damion Poitier |
| Academy Teacher (uncredited) | Rahvaunia |
| Shuttle Cadet (uncredited) | Bertrand Roberson Jr. |
| Starfleet Cadet (uncredited) | Deborah Rombaut |
| Starfleet Cadet (uncredited) | Leonard Jonathan Ruebe |
| Injured Officer in Sickbay (uncredited) | Darth Schuhe |
| Starfleet Cadet (uncredited) | Ramona Seymour |
| Vulcan Science Minister (uncredited) | William Morgan Sheppard |
| Enterprise Crew Member (uncredited) | Katie Soo |
| Cadet Officer (uncredited) | Joseph Stephens Jr. |
| Romulan Engineer (uncredited) | Joseph Steven |
| Klingon Agitator (uncredited) | T.J. Storm |
| Starfleet Cadet (uncredited) | Kaitlin Sullivan |
| Starfleet Security Officer (uncredited) | Paul Townsend |
| Klingon Prison Guard (uncredited) | Scott Trimble |
| Federation Captain Cartwright (uncredited) | Errik Tustenuggee |
| Cadet at Trial (uncredited) | Ravi Valleti |
| Starfleet Cadet (uncredited) | Jason Vaughn |
| Enterprise Crewman (uncredited) | A.J. Verel |
| Vulcan Council Member (uncredited) | Brian Waller |
| Star Fleet Cadet (uncredited) | Steve Wharton |
| Romulan (voice) (uncredited) | Wil Wheaton |
| Enterprise Crew Member (uncredited) | Rob Wood |
| Enterprise Computer (voice) (uncredited) | Lynnanne Zager |
