 | Taylor Kitsch | .... | Lieutenant Alex Hopper |
 | Alexander Skarsgård | .... | Commander Stone Hopper |
 | Rihanna | .... | Petty Officer Cora 'Weps' Raikes |
 | Brooklyn Decker | .... | Sam |
 | Tadanobu Asano | .... | Captain Yugi Nagata |
 | Hamish Linklater | .... | Cal Zapata |
 | Liam Neeson | .... | Admiral Shane |
 | Peter MacNicol | .... | Secretary of Defense |
 | John Tui | .... | Chief Petty Officer Walter 'The Beast' Lynch |
 | Jesse Plemons | .... | Boatswain Mate Seaman Jimmy 'Ordy' Ord |
 | Gregory D. Gadson | .... | Lieutenant Colonel Mick Canales |
 | Jerry Ferrara | .... | Sampson JOOD Strodell |
 | Adam Godley | .... | Dr. Nogrady |
 | Rico McClinton | .... | Captain Browley |
 | Joji Yoshida | .... | Chief Engineer Hiroki |
 | Louis Lombardi | .... | Bartender |
 | Norman Vincent McLafferty | .... | Old Salt |
 | Stephen C. Bishop | .... | JPJ OOD |
 | Dante Jimenez | .... | JPJ XO Mullenaro |
 | Daven Arce | .... | JPJ Helmsman |
 | Ralph Richardson | .... | JPJ Starboard Gunner |
 | Biunca Love | .... | JPJ BMOW |
 | Michael Sherman | .... | JPJ JOOD |
 | Austin Naulty | .... | JPJ Fireman |
 | Patricia Brown | .... | JPJ Fireman |
 | Gregory Harvey | .... | JPJ Fireman |
 | Sebastian James | .... | JPJ Scat |
 | Andrew Serpas | .... | JPJ Armorer |
 | Damien Parker | .... | JPJ Helibay Sailor |
 | Carson Aune | .... | CIC Gunner |
 | Doug Penty | .... | CIC Watch Supervisor |
 | Josh Pence | .... | Combat Systems Coordinator |
 | Jason Henderson | .... | Radar System Controller |
 | Brint Terrell | .... | Chart Table Plotter |
 | Brad Faucheux | .... | Chart Table Log Keeper |
 | Dustin J. Reno | .... | Electronic Warfare Supervisor |
 | John Schmotzer | .... | CIC Watch Officer |
 | Peter W. Berg | .... | JPJ 2nd Gunner |
 | Jonathon Groves | .... | JPJ Port Gunner |
 | Lloyd Pitts | .... | JPJ Port Gunner |
 | Ryan Tinio | .... | JPJ Radar Op |
 | Allie Sillah | .... | JPJ Lead Helmsman |
 | Johnny Santiago | .... | JPJ Switchboard Operator |
 | Kiley Margeson | .... | Gun Console Operator |
 | Jeffrey Johns | .... | Surface Warfare Coordinator |
 | Esther Solomon | .... | JPJ CIWS Operator |
 | Kevin Garlington | .... | JPJ Air Warfare Coordinator |
 | Anthony Czumalowski | .... | JPJ Sailor |
 | James Hadde | .... | JPJ Sailor |
 | Pat Lancaster | .... | JPJ Sailor |
 | Jordan Kirkwood | .... | JPJ Sailor |
 | Jane Dubiel | .... | JPJ Sailor |
 | John Weaver | .... | JPJ Sailor |
 | Mark Lindquist | .... | JPJ Sailor |
 | Philip Cody Neilson | .... | JPJ Sailor |
 | Dane Justman | .... | Sampson OOD |
 | Dustin Watchman | .... | Sampson Helmsman |
 | Drew Rausch | .... | Sampson XO |
 | Ryland Reamy | .... | Sampson CIC TAO |
 | Donald Willcutt | .... | Sampson Starboard Lookout |
 | Eli Miranda | .... | Sampson Boatswain |
 | Joshua Demuth | .... | Sampson Port Lookout |
 | Thomas Grieser | .... | Sampson Watch Officer |
 | Chris Darling | .... | Samson OS DA |
 | Tyrone Gregg | .... | Sampson Gunner |
 | Brian Hirono | .... | Myoko OOD |
 | Yutaka Takeuchi | .... | Myoko XO |
 | Nobuharu Harada | .... | Myoko JOOD |
 | Masaomi Uchida | .... | Myoko Helmsman |
 | Kyle Ken Shimabukuro | .... | Myoko Radar Operator |
 | Masashi Takekawa | .... | Myoko Starboard Lookout |
 | Hyoe Joe Takahashi | .... | Myoko BMOW |
 | Rick Hoffman | .... | Chairman, Joint Chiefs of Staff |
 | Stephen Baldini | .... | State Department Official |
 | Bill Stinchcomb | .... | Marine Commandant |
 | Bruce Mandell | .... | Army Chief of Staff |
 | Gary Grubbs | .... | Air Force Chief of Staff |
 | David Jensen | .... | NASA Director |
 | Mike Meldman | .... | Commander Meldman |
 | Hunter Meldman | .... | Ensign |
 | George Arine | .... | Japanese Vice Admiral |
 | Bill McMullen | .... | JPL Supervisor |
 | Joe Chrest | .... | JPL Controller |
 | Benjamin Lloyd | .... | Officer Blake |
 | Billy Slaughter | .... | BIP Technician |
 | Griff Furst | .... | BIP HQ Controller #2 |
 | Terri Battee | .... | BIP Journalist |
 | Angelo Denova | .... | BIP Journalist |
 | Colby Parker Jr. | .... | BIP Scientist |
 | Geoff Clayton | .... | BIP Scientist |
 | David Kors | .... | BIP Scientist |
 | Christopher McGahan | .... | Cal's Jr. Tech |
 | Kerry Cahill | .... | Cal's Female Colleague |
 | Liz Wicker | .... | Female Newscaster |
 | Michelle Arthur | .... | British Newscaster |
 | Natalia Castellanos | .... | Spanish Newscaster |
 | Dan Cooke | .... | Hawaiian Newscaster |
 | Leni Ito | .... | Japanese Newscaster |
 | Jay Jackson | .... | American Newscaster |
 | Jackie Johnson | .... | Herself |
 | Frank J. Doyle | .... | Soccer Ref |
 | Robin Atkin Downes | .... | Soccer Announcer |
 | Zach Selwyn | .... | Soccer Announcer |
 | Leonard Rogers | .... | Japanese Goalie |
 | Clarence Greenwood | .... | Singer at Bar |
 | Evan Bernard | .... | Fat Guy at Bar |
 | Cora Yamagata | .... | Convenience Store Owner |
 | Frank Cassavetes | .... | Grizzled Gunner |
 | Tom McCurdy | .... | Admiral Shane's Aide |
 | Robert Hotalen | .... | Marine Aide |
 | Rami Malek | .... | Watch Officer |
 | Ray Mabus | .... | Reagan CO |
 | Marissa Nordhelm | .... | Reagan Radar Operator |
 | Ronald Chavez | .... | Commander Rivera |
 | Legrand Strickland | .... | Wounded Warrior |
 | Michael Vernon | .... | CAREN Technician |
 | Jason Wilken | .... | Director of Rehabilitation |
 | James Ward | .... | Old Salt |
 | Philip Trifilo | .... | Old Salt |
 | William Powers | .... | Old Salt |
 | Donald C. Dailey | .... | Old Salt |
 | William I. Carr | .... | Old Salt |
 | Dennis M. Keating | .... | Old Salt |
 | Garrett Lynch | .... | Old Salt |
 | Wallace Mackensen | .... | Old Salt |
 | William Long | .... | Old Salt |
 | Edward Drew | .... | Old Salt TAO |
 | John E. Culkin | .... | Old Salt RO |
 | Hiram Fong Jr. | .... | Old Salt Navigator |
 | Larry Wegger | .... | Old Salt WO |
 | Dallas Kane Hewitt | .... | POFC Dallas |
 | Adam Sibley | .... | SCAT Team |
 | James Rish | .... | SCAT Team |
 | George O'Hanlon | .... | Tourist Guide |
 | Wesley Phelps | .... | Tourist Kid |
 | Marcus Lyle Brown | .... | Regent Land Commander |
 | Kyle Clements | .... | Regent Sea Commander |
 | Kevin Kearns | .... | Jimmy |
 | John Bell | .... | Angus |
 | Conor McCarry | .... | Ronnie |
 | Dylan Gillooly | .... | Thom |
 | Gerardo Celasco | .... | Ensign Chavez |
 | Teresa Alvarez | .... | Reporter (uncredited) |
 | Luing Andrews | .... | Admiral Jack (uncredited) |
 | Reila Aphrodite | .... | Sam (uncredited) |
 | Joshua Aucoin | .... | Marine (uncredited) |
 | Fileena Bahris | .... | Soccer Fan (uncredited) |
 | Joanne Bahris | .... | Woman at Soccer Game (uncredited) |
 | Tim Blanchard | .... | Regent (uncredited) |
 | Raj K. Bose | .... | Singaporean Captain (uncredited) |
 | Beau Brasseaux | .... | Navy SEAL (uncredited) |
 | Curtis Bush | .... | Naval Officer (uncredited) |
 | Tom Cain | .... | Three Star Admiral (uncredited) |
 | Edward J. Clare | .... | Scientist (uncredited) |
 | Davo Coria | .... | Little League Father (uncredited) |
 | Kamakani De Dely | .... | Chief Petty Officer (uncredited) |
 | Alex DeMarco | .... | CIC Sailor (uncredited) |
 | Annie Doiron | .... | Bar Patron (uncredited) |
 | Paul Edney | .... | U.S. Navy Captain (uncredited) |
 | Joanna Ellenbeck | .... | Petty Officer 3rd Class Blackburn (uncredited) |
 | Kerry Ellington | .... | Navy Wife (uncredited) |
 | Kasey Emas | .... | Bar Patron (uncredited) |
 | Gregory Allen Gabroy | .... | Ensign Huyn (uncredited) |
 | Jaq Galliano | .... | Alien Regent (uncredited) |
 | Jaq Galliano | .... | Thug (uncredited) |
 | Mickey Graue | .... | Baseball Kid (uncredited) |
 | Paul Gunawan | .... | Myoko Sailor (uncredited) |
 | Jim Gunter | .... | Buddy (uncredited) |
 | Dakota Hill | .... | Gunner's Mate Wagner (uncredited) |
 | Sean Douglas Hoban | .... | U.S. Navy Sailor (uncredited) |
 | Kaitlin Hoychick | .... | J.P.L. Scientist (uncredited) |
 | Kennon Kepper | .... | Kid in Car (uncredited) |
 | James Koons | .... | Navy Medic (uncredited) |
 | Anthony A. Kung | .... | Japanese Soccer Player (uncredited) |
 | Greg Liem | .... | Myoko Watchman (uncredited) |
 | Rebecca Maltby | .... | Private Stanley (uncredited) |
 | Wes Martinez | .... | International Anchor (uncredited) |
 | Ed Moy | .... | Japanese Sailor (uncredited) |
 | Barack Obama | .... | Himself (archive footage) (uncredited) |
 | Adam J. Reeb | .... | Petty Officer 3rd Class (uncredited) |
 | Jane Runnalls | .... | Naval Officer (uncredited) |
 | Rhonda Schaubert | .... | Hawaiian Bar Server (uncredited) |
 | Ben Skorstad | .... | Camera ship pilot (uncredited) |
 | Barbara L. Southern | .... | Admiral's Wife (uncredited) |
 | Kelly R. Thomas | .... | Alien Ground Commander (uncredited) |
 | Joseph Wilson | .... | Chief Petty Officer Hayes (uncredited) |
 | Michael Wozniak | .... | Journalist (uncredited) |
 | Elvin Yoshida | .... | Myoko Officer (uncredited) |